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class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Wikipedia project page</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"WP:NUMBERS" redirects here. For other uses, see <a href="/wiki/Wikipedia:NUMBERS_(disambiguation)" class="mw-disambig" title="Wikipedia:NUMBERS (disambiguation)">WP:NUMBERS (disambiguation)</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1238436933">.mw-parser-output .ombox{margin:4px 0;border-collapse:collapse;border:1px solid #a2a9b1;background-color:var(--background-color-neutral-subtle,#f8f9fa);box-sizing:border-box;color:var(--color-base,#202122)}.mw-parser-output .ombox.mbox-small{font-size:88%;line-height:1.25em}.mw-parser-output .ombox-speedy{border:2px solid #b32424;background-color:#fee7e6}.mw-parser-output .ombox-delete{border:2px solid #b32424}.mw-parser-output .ombox-content{border:1px solid #f28500}.mw-parser-output .ombox-style{border:1px solid #fc3}.mw-parser-output .ombox-move{border:1px solid #9932cc}.mw-parser-output .ombox-protection{border:2px solid #a2a9b1}.mw-parser-output .ombox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .ombox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .ombox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .ombox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ombox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .ombox{margin:4px 10%}.mw-parser-output .ombox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}body.skin--responsive .mw-parser-output table.ombox img{max-width:none!important}@media screen{html.skin-theme-clientpref-night .mw-parser-output .ombox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .ombox-speedy{background-color:#310402}}</style><table class="plainlinks ombox ombox-notice" role="presentation"><tbody><tr><td class="mbox-image"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Blue_check.svg/30px-Blue_check.svg.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Blue_check.svg/45px-Blue_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Blue_check.svg/60px-Blue_check.svg.png 2x" data-file-width="600" data-file-height="600"></td><td class="mbox-text"><div style="padding-top: 6px; padding-bottom: 5px;">This <a href="/wiki/Wikipedia:Policies_and_guidelines#guide" title="Wikipedia:Policies and guidelines">guideline</a> is a part of the English Wikipedia's <a href="/wiki/Wikipedia:Manual_of_Style" title="Wikipedia:Manual of Style">Manual of Style</a>. <div style="font-size: 90%;"> It is a generally accepted standard that editors should attempt to follow, though <a href="/wiki/Wikipedia:Ignore_all_rules" title="Wikipedia:Ignore all rules">occasional exceptions</a> may apply. Any substantive edit to this page should reflect <a href="/wiki/Wikipedia:Consensus" title="Wikipedia:Consensus">consensus</a>. When in doubt, discuss first on the <a href="/wiki/Wikipedia_talk:Manual_of_Style/Dates_and_numbers" title="Wikipedia talk:Manual of Style/Dates and numbers">talk page</a>.</div></div></td><td class="mbox-imageright"><style data-mw-deduplicate="TemplateStyles:r1252059228">.mw-parser-output .module-shortcutboxplain{float:right;margin:0 0 0 1em;border:1px solid var(--border-color-base,#a2a9b1);background-color:var(--background-color-base,#fff);padding:0.3em 0.6em 0.2em 0.6em;text-align:center;font-size:85%}.mw-parser-output .module-shortcutboxleft{float:left;margin:0 1em 0 0}.mw-parser-output .module-shortcutlist{display:inline-block;border-bottom:1px solid var(--border-color-base,#a2a9b1);margin-bottom:0.2em}.mw-parser-output .module-shortcutboxplain ul{font-weight:bold}.mw-parser-output .module-shortcutanchordiv{position:relative;top:-3em}.mw-parser-output li .module-shortcutanchordiv{float:right}.mw-parser-output .mbox-imageright .module-shortcutboxplain{padding:0.4em 1em 0.4em 1em;line-height:1.3;margin:0}</style><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:NUM&redirect=no">MOS:NUM</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:MOSNUM&redirect=no">WP:MOSNUM</a></li></ul></div></div></td></tr></tbody></table> <style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist 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.sidebar-title-with-pretitle{background:transparent!important}html.skin-theme-clientpref-night .mw-parser-output .sidebar:not(.notheme) .sidebar-title-with-pretitle a{color:var(--color-progressive)!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sidebar:not(.notheme) .sidebar-list-title,html.skin-theme-clientpref-os .mw-parser-output .sidebar:not(.notheme) .sidebar-title-with-pretitle{background:transparent!important}html.skin-theme-clientpref-os .mw-parser-output .sidebar:not(.notheme) .sidebar-title-with-pretitle a{color:var(--color-progressive)!important}}@media print{body.ns-0 .mw-parser-output .sidebar{display:none!important}}</style><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1246091330"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1246091330"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1246091330"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1246091330"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1246091330"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1246091330"><table class="sidebar sidebar-collapse nomobile nowraplinks hlist"><tbody><tr><th class="sidebar-title"><a href="/wiki/Wikipedia:Manual_of_Style" title="Wikipedia:Manual of Style">Manual of Style (MoS)</a></th></tr><tr><td class="sidebar-image"><div class="mw-inputbox-centered" style=""><form name="searchbox" class="searchbox mw-inputbox-form" action="/wiki/Special:Search" id="style-searchbox"><div class="cdx-text-input"><input class="mw-inputbox-input mw-searchInput searchboxInput cdx-text-input__input" name="search" placeholder="" size="25" dir="ltr"></div><input type="hidden" value="Wikipedia:Manual of Style" name="prefix"> <input type="submit" name="fulltext" value="Search the MoS" class="cdx-button"><input type="hidden" value="Search" name="fulltext"></form></div></td></tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(content)" title="Category:Wikipedia Manual of Style (content)">Content</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Accessibility" title="Wikipedia:Manual of Style/Accessibility">Accessibility</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Biography" title="Wikipedia:Manual of Style/Biography">Biography</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Disambiguation_pages" title="Wikipedia:Manual of Style/Disambiguation pages">Disambiguation pages</a> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Organizing_disambiguation_pages_by_subject_area" title="Wikipedia:Manual of Style/Organizing disambiguation pages by subject area">Organizing by subject</a></li></ul></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Gender_identity" title="Wikipedia:Manual of Style/Gender identity">Gender identity</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Hidden_text" title="Wikipedia:Manual of Style/Hidden text">Hidden text</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Infoboxes" title="Wikipedia:Manual of Style/Infoboxes">Infoboxes</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Linking" title="Wikipedia:Manual of Style/Linking">Linking</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Self-references_to_avoid" title="Wikipedia:Manual of Style/Self-references to avoid">Self-references</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Words_to_watch" title="Wikipedia:Manual of Style/Words to watch">Words to watch</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(formatting)" title="Category:Wikipedia Manual of Style (formatting)">Formatting</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Abbreviations" title="Wikipedia:Manual of Style/Abbreviations">Abbreviations</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Capital_letters" title="Wikipedia:Manual of Style/Capital letters">Capitalization</a></li> <li><a class="mw-selflink selflink">Dates and numbers</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Pronunciation" title="Wikipedia:Manual of Style/Pronunciation">Pronunciation</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Spelling" title="Wikipedia:Manual of Style/Spelling">Spelling</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Text_formatting" title="Wikipedia:Manual of Style/Text formatting">Text formatting</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Titles_of_works" title="Wikipedia:Manual of Style/Titles of works">Titles of works</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(images)" title="Category:Wikipedia Manual of Style (images)">Images</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Captions" title="Wikipedia:Manual of Style/Captions">Captions</a></li> <li><a href="/wiki/Wikipedia:Image_use_policy#Adding_images_to_articles" title="Wikipedia:Image use policy">Image placement</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Icons" title="Wikipedia:Manual of Style/Icons">Icons</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Images" title="Wikipedia:Manual of Style/Images">Images</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(layout)" title="Category:Wikipedia Manual of Style (layout)">Layout</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Layout" title="Wikipedia:Manual of Style/Layout">Layout</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Lead_section" title="Wikipedia:Manual of Style/Lead section">Lead section</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Tables" title="Wikipedia:Manual of Style/Tables">Tables</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Trivia_sections" title="Wikipedia:Manual of Style/Trivia sections">Trivia sections</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(lists)" title="Category:Wikipedia Manual of Style (lists)">Lists</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Lists" title="Wikipedia:Manual of Style/Lists">Lists</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Lists_of_works" title="Wikipedia:Manual of Style/Lists of works">Lists of works</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Road_junction_lists" title="Wikipedia:Manual of Style/Road junction lists">Road junctions</a></li> <li><a href="/wiki/Wikipedia:Stand-alone_lists" title="Wikipedia:Stand-alone lists">Stand-alone lists</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)">By topic area</div><div class="sidebar-list-content mw-collapsible-content"><table class="sidebar sidebar-collapse nomobile nowraplinks" style="background-color: transparent; color: var( --color-base ); border-collapse:collapse; border-spacing:0px; border:none; width:100%; margin:0px; font-size:100%; clear:none; float:none"><tbody><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(legal)" title="Category:Wikipedia Manual of Style (legal)">Legal</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Legal" title="Wikipedia:Manual of Style/Legal">Legal</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Trademarks" title="Wikipedia:Manual of Style/Trademarks">Trademarks</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(arts)" title="Category:Wikipedia Manual of Style (arts)">Arts</a></div><div class="sidebar-list-content mw-collapsible-content"><table class="sidebar nomobile nowraplinks" style="background-color: transparent; color: var( --color-base ); border-collapse:collapse; border-spacing:0px; border:none; width:100%; margin:0px; font-size:100%; clear:none; float:none"><tbody><tr><td class="sidebar-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Anime_and_manga" title="Wikipedia:Manual of Style/Anime and manga">Anime and manga</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Comics" title="Wikipedia:Manual of Style/Comics">Comics</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Film" title="Wikipedia:Manual of Style/Film">Film</a></li> <li><a href="/wiki/Wikipedia:Lyrics_and_poetry" title="Wikipedia:Lyrics and poetry">Lyrics and poetry</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Novels" title="Wikipedia:Manual of Style/Novels">Novels</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Television" title="Wikipedia:Manual of Style/Television">Television</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Video_games" title="Wikipedia:Manual of Style/Video games">Video games</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Visual_arts" title="Wikipedia:Manual of Style/Visual arts">Visual arts</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Writing_about_fiction" title="Wikipedia:Manual of Style/Writing about fiction">Writing about fiction</a></li></ul></td> </tr><tr><th class="sidebar-heading"> <a href="/wiki/Category:Wikipedia_Manual_of_Style_(music)" title="Category:Wikipedia Manual of Style (music)">Music</a></th></tr><tr><td class="sidebar-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Music" title="Wikipedia:Manual of Style/Music">Music</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Music_samples" title="Wikipedia:Manual of Style/Music samples">Music samples</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Record_charts" title="Wikipedia:Manual of Style/Record charts">Record charts</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Stringed_instrument_tunings" title="Wikipedia:Manual of Style/Stringed instrument tunings">Stringed instruments</a></li></ul></td> </tr></tbody></table></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(history)" title="Category:Wikipedia Manual of Style (history)">History</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Blazon" title="Wikipedia:Manual of Style/Blazon">Blazons</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Military_history" title="Wikipedia:Manual of Style/Military history">Military history</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(regional)" title="Category:Wikipedia Manual of Style (regional)">Regional</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Naming_conventions_(geographic_names)#Specific_topics" title="Wikipedia:Naming conventions (geographic names)">Specific naming conventions</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Canada-related_articles" title="Wikipedia:Manual of Style/Canada-related articles">Canada</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/China-_and_Chinese-related_articles" title="Wikipedia:Manual of Style/China- and Chinese-related articles">China (and Chinese)</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Egypt-related_articles" title="Wikipedia:Manual of Style/Egypt-related articles">Egypt</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/France-_and_French-related_articles" title="Wikipedia:Manual of Style/France- and French-related articles">France (and French)</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Hawaii-related_articles" title="Wikipedia:Manual of Style/Hawaii-related articles">Hawaii</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/India-related_articles" title="Wikipedia:Manual of Style/India-related articles">India</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Indonesia-related_articles" title="Wikipedia:Manual of Style/Indonesia-related articles">Indonesia</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Ireland-related_articles" title="Wikipedia:Manual of Style/Ireland-related articles">Ireland</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Japan-related_articles" title="Wikipedia:Manual of Style/Japan-related articles">Japan</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Korea-related_articles" title="Wikipedia:Manual of Style/Korea-related articles">Korea</a></li> <li><a href="/wiki/Wikipedia:Naming_conventions_(Macedonia)" title="Wikipedia:Naming conventions (Macedonia)">Macedonia</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Malaysia-related_articles" title="Wikipedia:Manual of Style/Malaysia-related articles">Malaysia</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Pakistan-related_articles" title="Wikipedia:Manual of Style/Pakistan-related articles">Pakistan</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Philippines-related_articles" title="Wikipedia:Manual of Style/Philippines-related articles">Philippines</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Poland-related_articles" title="Wikipedia:Manual of Style/Poland-related articles">Poland</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Singapore-related_articles" title="Wikipedia:Manual of Style/Singapore-related articles">Singapore</a></li> <li><a href="/wiki/Wikipedia:WikiProject_Trinidad_and_Tobago/Style_guide" title="Wikipedia:WikiProject Trinidad and Tobago/Style guide">Trinidad and Tobago</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(religion)" title="Category:Wikipedia Manual of Style (religion)">Religion</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Islam-related_articles" title="Wikipedia:Manual of Style/Islam-related articles">Islam</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Latter_Day_Saints" title="Wikipedia:Manual of Style/Latter Day Saints">Latter Day Saints</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(science)" title="Category:Wikipedia Manual of Style (science)">Science</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry" title="Wikipedia:Manual of Style/Chemistry">Chemistry</a> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/Compound_classes" title="Wikipedia:Manual of Style/Chemistry/Compound classes">Compound classes</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/Chemicals" title="Wikipedia:Manual of Style/Chemistry/Chemicals">Chemicals</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/References_and_external_links" title="Wikipedia:Manual of Style/Chemistry/References and external links">References and external links</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/Safety" title="Wikipedia:Manual of Style/Chemistry/Safety">Safety</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/Structure_drawing" title="Wikipedia:Manual of Style/Chemistry/Structure drawing">Structure drawing</a></li></ul></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Computer_science" title="Wikipedia:Manual of Style/Computer science">Computer science</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Mathematics" title="Wikipedia:Manual of Style/Mathematics">Mathematics</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Medicine-related_articles" title="Wikipedia:Manual of Style/Medicine-related articles">Medicine</a></li> <li><a href="/wiki/Template:Taxobox/doc" title="Template:Taxobox/doc">Taxonomy</a></li></ul></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(sports)" title="Category:Wikipedia Manual of Style (sports)">Sports</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Cue_sports" title="Wikipedia:Manual of Style/Cue sports">Cue sports</a> (<a href="/wiki/Wikipedia:Manual_of_Style/Snooker" title="Wikipedia:Manual of Style/Snooker">Snooker</a>)</li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Figure_skating" title="Wikipedia:Manual of Style/Figure skating">Figure skating</a> (<a href="/wiki/Wikipedia:Manual_of_Style/Figure_skating_terminology" title="Wikipedia:Manual of Style/Figure skating terminology">Terminology</a>)</li></ul></div></div></td> </tr></tbody></table></div></div></td> </tr><tr><td class="sidebar-content"> <div class="sidebar-list mw-collapsible mw-collapsed"><div class="sidebar-list-title" style="background-color: #def; color:black; padding-left: 2px;;color: var(--color-base)"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(related_guidelines)" title="Category:Wikipedia Manual of Style (related guidelines)">Related guidelines</a></div><div class="sidebar-list-content mw-collapsible-content"> <ul><li><a href="/wiki/Wikipedia:Article_size" title="Wikipedia:Article size">Article size</a></li> <li><a href="/wiki/Wikipedia:Article_titles" title="Wikipedia:Article titles">Article titles</a></li> <li><a href="/wiki/Wikipedia:Categories,_lists,_and_navigation_templates" title="Wikipedia:Categories, lists, and navigation templates">Categories, lists, and navigation templates</a></li> <li><a href="/wiki/Wikipedia:Categorization" title="Wikipedia:Categorization">Categorization</a></li> <li><a href="/wiki/Wikipedia:Hatnote" title="Wikipedia:Hatnote">Hatnotes</a></li> <li><a href="/wiki/Wikipedia:Subpages" title="Wikipedia:Subpages">Subpages</a></li> <li><a href="/wiki/Wikipedia:Make_technical_articles_understandable" title="Wikipedia:Make technical articles understandable">Understandability</a></li></ul></div></div></td> </tr><tr><td class="sidebar-below"> <ul><li><a href="/wiki/Wikipedia:Simplified_Manual_of_Style" title="Wikipedia:Simplified Manual of Style">Overview</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Contents" title="Wikipedia:Manual of Style/Contents">Contents</a></li> <li><a href="/wiki/Wikipedia:Styletips" title="Wikipedia:Styletips">Tips</a></li></ul></td></tr><tr><td class="sidebar-navbar"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Style" title="Template:Style"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Style" title="Template talk:Style"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Style" title="Special:EditPage/Template:Style"><abbr title="Edit this template">e</abbr></a></li></ul></div></td></tr></tbody></table> This page guides the presentation of numbers, dates, times, measurements, currencies, coordinates, and similar items in articles. The aim is to promote clarity, cohesion, and consistency, and to make the encyclopedia easier and more intuitive to use. For numbers, dates, and similar items in Wikipedia article titles, see the <a href="/wiki/Wikipedia:Naming_conventions_(numbers_and_dates)" title="Wikipedia:Naming conventions (numbers and dates)">"Naming conventions (numbers and dates)"</a> guideline. Where this manual gives options, maintain consistency within an article unless there is a good reason to do otherwise. The <a href="/wiki/Wikipedia:Arbitration_Committee" title="Wikipedia:Arbitration Committee">Arbitration Committee</a> has ruled that editors should not change an article from one guideline-defined style to another without a substantial reason unrelated to mere choice of style; <a href="/wiki/Wikipedia:Edit_warring" title="Wikipedia:Edit warring">edit-warring</a> over optional styles is unacceptable.<a href="#cite_note-1">[a]</a> If discussion fails to resolve the question of which style to use in an article, defer to the style used by the first major contributor. <style data-mw-deduplicate="TemplateStyles:r886046785">.mw-parser-output .toclimit-2 .toclevel-1 ul,.mw-parser-output .toclimit-3 .toclevel-2 ul,.mw-parser-output .toclimit-4 .toclevel-3 ul,.mw-parser-output .toclimit-5 .toclevel-4 ul,.mw-parser-output .toclimit-6 .toclevel-5 ul,.mw-parser-output .toclimit-7 .toclevel-6 ul{display:none}</style><div class="toclimit-4"><div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none"><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><label class="toctogglelabel" for="toctogglecheckbox"></label></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#General_notes">1 General notes</a> <ul> <li class="toclevel-2 tocsection-2"><a href="#Quotations,_titles,_etc.">1.1 Quotations, titles, etc.</a></li> <li class="toclevel-2 tocsection-3"><a href="#Non-breaking_spaces">1.2 Non-breaking spaces</a></li> </ul> </li> <li class="toclevel-1 tocsection-4"><a href="#Chronological_items">2 Chronological items</a> <ul> <li class="toclevel-2 tocsection-5"><a href="#Statements_likely_to_become_outdated">2.1 Statements likely to become outdated</a></li> <li class="toclevel-2 tocsection-6"><a href="#Dates,_months,_and_years">2.2 Dates, months, and years</a> <ul> <li class="toclevel-3 tocsection-7"><a href="#Formats">2.2.1 Formats</a> <ul> <li class="toclevel-4 tocsection-8"><a href="#Consistency">2.2.1.1 Consistency</a></li> <li class="toclevel-4 tocsection-9"><a href="#Strong_national_ties_to_a_topic">2.2.1.2 Strong national ties to a topic</a></li> <li class="toclevel-4 tocsection-10"><a href="#Retaining_existing_format">2.2.1.3 Retaining existing format</a></li> </ul> </li> <li class="toclevel-3 tocsection-11"><a href="#Era_style">2.2.2 Era style</a></li> <li class="toclevel-3 tocsection-12"><a href="#Julian_and_Gregorian_calendars">2.2.3 Julian and Gregorian calendars</a></li> <li class="toclevel-3 tocsection-13"><a href="#Ranges">2.2.4 Ranges</a></li> <li class="toclevel-3 tocsection-14"><a href="#Uncertain,_incomplete,_or_approximate_dates">2.2.5 Uncertain, incomplete, or approximate dates</a></li> </ul> </li> <li class="toclevel-2 tocsection-15"><a href="#Times_of_day">2.3 Times of day</a> <ul> <li class="toclevel-3 tocsection-16"><a href="#Time_zones">2.3.1 Time zones</a></li> </ul> </li> <li class="toclevel-2 tocsection-17"><a href="#Days_of_the_week">2.4 Days of the week</a></li> <li class="toclevel-2 tocsection-18"><a href="#Seasons_of_the_year">2.5 Seasons of the year</a></li> <li class="toclevel-2 tocsection-19"><a href="#Decades">2.6 Decades</a></li> <li class="toclevel-2 tocsection-20"><a href="#Centuries_and_millennia">2.7 Centuries and millennia</a></li> <li class="toclevel-2 tocsection-21"><a href="#Long_periods_of_time">2.8 Long periods of time</a></li> </ul> </li> <li class="toclevel-1 tocsection-22"><a href="#Numbers">3 Numbers</a> <ul> <li class="toclevel-2 tocsection-23"><a href="#Numbers_as_figures_or_words">3.1 Numbers as figures or words</a></li> <li class="toclevel-2 tocsection-24"><a href="#Ordinals">3.2 Ordinals</a></li> <li class="toclevel-2 tocsection-25"><a href="#Number_ranges">3.3 Number ranges</a></li> <li class="toclevel-2 tocsection-26"><a href="#Sport_scores,_vote_tallies,_etc.">3.4 Sport scores, vote tallies, etc.</a></li> <li class="toclevel-2 tocsection-27"><a href="#Singular_versus_plural">3.5 Singular versus plural</a></li> <li class="toclevel-2 tocsection-28"><a href="#Fractions_and_ratios">3.6 Fractions and ratios</a></li> <li class="toclevel-2 tocsection-29"><a href="#Decimals">3.7 Decimals</a></li> <li class="toclevel-2 tocsection-30"><a href="#Grouping_of_digits">3.8 Grouping of digits</a></li> <li class="toclevel-2 tocsection-31"><a href="#Percentages">3.9 Percentages</a></li> <li class="toclevel-2 tocsection-32"><a href="#Scientific_and_engineering_notation">3.10 Scientific and engineering notation</a></li> <li class="toclevel-2 tocsection-33"><a href="#Uncertainty_and_rounding">3.11 Uncertainty and rounding</a></li> <li class="toclevel-2 tocsection-34"><a href="#Non%E2%80%93base-10_notations">3.12 Non–base-10 notations</a></li> <li class="toclevel-2 tocsection-35"><a href="#Mathematical_formulae">3.13 Mathematical formulae</a></li> </ul> </li> <li class="toclevel-1 tocsection-36"><a href="#Units_of_measurement">4 Units of measurement</a> <ul> <li class="toclevel-2 tocsection-37"><a href="#Unit_choice_and_order">4.1 Unit choice and order</a></li> <li class="toclevel-2 tocsection-38"><a href="#Unit_conversions">4.2 Unit conversions</a></li> <li class="toclevel-2 tocsection-39"><a href="#Unit_names_and_symbols">4.3 Unit names and symbols</a></li> <li class="toclevel-2 tocsection-40"><a href="#Specific_units">4.4 Specific units</a> <ul> <li class="toclevel-3 tocsection-41"><a href="#Quantities_of_bytes_and_bits">4.4.1 Quantities of bytes and bits</a></li> </ul> </li> </ul> </li> <li class="toclevel-1 tocsection-42"><a href="#Currencies_and_monetary_values">5 Currencies and monetary values</a></li> <li class="toclevel-1 tocsection-43"><a href="#Common_mathematical_symbols">6 Common mathematical symbols</a></li> <li class="toclevel-1 tocsection-44"><a href="#Geographical_coordinates">7 Geographical coordinates</a></li> <li class="toclevel-1 tocsection-45"><a href="#See_also">8 See also</a></li> <li class="toclevel-1 tocsection-46"><a href="#Notes">9 Notes</a></li> <li class="toclevel-1 tocsection-47"><a href="#References">10 References</a></li> </ul> </div> </div> </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(1)"><h2 id="General_notes" data-mw-thread-id="h-General_notes">General notes</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=1" title="Edit section: General notes" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-1 collapsible-block" id="mf-section-1"> <div class="mw-heading mw-heading3"><h3 id="Quotations,_titles,_etc." data-mw-thread-id="h-Quotations,_titles,_etc.-General_notes">Quotations, titles, etc.</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=2" title="Edit section: Quotations, titles, etc." class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Wikipedia:Manual_of_Style#Quotations" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Quotations</a></div> Quotations, titles of books and articles, and similar "imported" text should be faithfully reproduced, even if they use formats or units inconsistent with these guidelines or with other formats in the same article. If necessary, clarify via [bracketed interpolation], article text, or footnotes. <div class="mw-heading mw-heading3"><h3 id="Non-breaking_spaces" data-mw-thread-id="h-Non-breaking_spaces-General_notes">Non-breaking spaces</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=3" title="Edit section: Non-breaking spaces" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> Guidance on the use of <a href="/wiki/Non-breaking_space" title="Non-breaking space">non-breaking spaces</a> ("hard spaces") is given in some sections below, but not all situations in which hard spaces ({{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}} or <code>&nbsp;</code>) or <code>{{<a href="/wiki/Template:Nowrap" title="Template:Nowrap">nowrap</a>}}</code> may be appropriate are described. <style data-mw-deduplicate="TemplateStyles:r1033199720">.mw-parser-output div.crossreference{padding-left:0}</style><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">For further information see <a href="/wiki/Wikipedia:Manual_of_Style#Non-breaking_spaces" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Non-breaking spaces</a> and <a href="/wiki/Wikipedia:Line-break_handling" class="mw-redirect" title="Wikipedia:Line-break handling">Wikipedia:Line-break handling</a>. </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(2)"><h2 id="Chronological_items" data-mw-thread-id="h-Chronological_items">Chronological items</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=4" title="Edit section: Chronological items" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-2 collapsible-block" id="mf-section-2"> <div class="mw-heading mw-heading3"><h3 id="Statements_likely_to_become_outdated" data-mw-thread-id="h-Statements_likely_to_become_outdated-Chronological_items">Statements likely to become outdated</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=5" title="Edit section: Statements likely to become outdated" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:SINCE&redirect=no">MOS:SINCE</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATED&redirect=no">MOS:DATED</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:CURRENT&redirect=no">MOS:CURRENT</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:RECENT&redirect=no">MOS:RECENT</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:NOW&redirect=no">MOS:NOW</a></li></ul></div></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Wikipedia:Manual_of_Style/Words_to_watch#Relative_time_references" title="Wikipedia:Manual of Style/Words to watch">Wikipedia:Manual of Style/Words to watch § Relative time references</a>, <a href="/wiki/Wikipedia:Updating_information" title="Wikipedia:Updating information">Wikipedia:Updating information</a>, and <a href="/wiki/Wikipedia:As_of" title="Wikipedia:As of">Wikipedia:As of</a></div> Except on pages that are inherently time-sensitive and updated regularly (e.g. <a href="/wiki/Wikipedia:How_the_Current_events_page_works" title="Wikipedia:How the Current events page works">the "Current events" portal</a>), terms such as now, today, currently, present, to date, so far, soon, upcoming, ongoing, and recently should usually be avoided in favor of phrases such as during the 2010s, since 2010, and in August 2020. Wording can usually be modified to remove the "now" perspective: not she is the current director but she became director on 1 January 2024; not 2010–present but beginning in 2010 or since 2010. Terms likely to go out of date include best known for, holds the record for, etc.<a href="#cite_note-2">[b]</a> For current and future events, use phrases such as as of November 2024 or since the beginning of 2024 to signal the time-dependence of the information; use the template {{<a href="/wiki/Template:As_of" title="Template:As of">as of</a>}} (or {{<a href="/wiki/Template:Updated" title="Template:Updated">updated</a>}}) in conjunction. Relative-time expressions are acceptable for very long periods, such as geological epochs: Humans diverged from other primates long ago, but <a href="https://en.wikiquote.org/wiki/Samuel_Butler_(novelist)#legislature" class="extiw" title="q:Samuel Butler (novelist)">only recently developed state legislatures</a>. <div class="mw-heading mw-heading3"><h3 id="Dates,_months,_and_years" data-mw-thread-id="h-Dates,_months,_and_years-Chronological_items">Dates, months, and years</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=6" title="Edit section: Dates, months, and years" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"WP:YEAR" redirects here. For WikiProject Years, see <a href="/wiki/Wikipedia:YEARS" class="mw-redirect" title="Wikipedia:YEARS">WP:YEARS</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATE&redirect=no">MOS:DATE</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATEFORMAT&redirect=no">MOS:DATEFORMAT</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:YEAR&redirect=no">MOS:YEAR</a></li></ul></div></div> <ul><li>These requirements do not apply to dates in quotations or titles; <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see <a href="/wiki/Wikipedia:Manual_of_Style#Quotations" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Quotations</a>.</li> <li>Special rules apply to citations; <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see <a href="/wiki/Wikipedia:Citing_sources#Citation_style" title="Wikipedia:Citing sources">Wikipedia:Citing sources § Citation style</a>.</li> <li>See also <a href="/wiki/Wikipedia:Overview_of_date_formatting_guidelines" title="Wikipedia:Overview of date formatting guidelines">Wikipedia:Overview of date formatting guidelines</a>.</li></ul> <div class="mw-heading mw-heading4"><h4 id="Formats" data-mw-thread-id="h-Formats-Dates,_months,_and_years">Formats</h4> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=7" title="Edit section: Formats" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <table class="wikitable"> <caption>Acceptable date formats </caption> <tbody><tr> <th style="width:40pt;">General use </th> <th style="width:40pt;">Only in limited situations where brevity is helpful<a href="#cite_note-brevity-3">[c]</a> </th> <th>Comments </th></tr> <tr> <td>2 September 2001 </td> <td>2 Sep 2001 </td> <td> A comma doesn't follow the year unless otherwise required by context: <div><ul><li>The 5 May 1922 meeting was cancelled.</li><li>Except Jones, who left London on 5 March 1847, every delegate attended the signing.</li></ul></div> </td></tr> <tr> <td>September 2, 2001 </td> <td>Sep 2, 2001 </td> <td> A comma follows the year unless <a href="/wiki/Wikipedia:Manual_of_Style#Commas" title="Wikipedia:Manual of Style">other punctuation obviates it</a>: <div><ul><li>The weather on March 12, 2005, was clear and warm.</li><li>Everyone remembers July 20, 1969 – when humans first landed on the Moon. </li></ul></div> </td></tr> <tr> <td>2 September </td> <td>2 Sep </td> <td rowspan="2">Omit year only where there is no risk of ambiguity: <div><ul><li>The 2012 London Olympics ran from 25 July to 12 September.</li><li>January 1 is New Year's Day.</li></ul></div> </td></tr> <tr> <td>September 2 </td> <td>Sep 2 </td></tr> <tr> <td>No equivalent for general use </td> <td>2001-09-02 </td> <td>Use <var style="padding-right: 1px;">yyyy</var>-<var style="padding-right: 1px;">mm</var>-<var style="padding-right: 1px;">dd</var> format only with <a href="/wiki/Gregorian_calendar" title="Gregorian calendar">Gregorian</a> dates from 1583 onward.<a href="#cite_note-4">[d]</a> </td></tr> <tr> <td>September 2001 </td> <td>Sep 2001 </td> <td> </td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:UNLINKDATES&redirect=no">MOS:UNLINKDATES</a></li></ul></div></div> <ul><li>Dates, years, and other chronological items should be linked only when they are relevant to the subject and likely to be useful to a reader; this rule does not apply to articles that are explicitly on a chronological item, e.g. <a href="/wiki/2002" title="2002">2002</a>, <a href="/wiki/19th_century" title="19th century">19th century</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(as discussed at <a href="/wiki/Wikipedia:Linking#Chronological_items" class="mw-redirect" title="Wikipedia:Linking">Wikipedia:Linking § Chronological items</a>).<a href="#cite_note-5">[e]</a></li> <li>For issues related to dates in sortable tables, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see <a href="/wiki/Help:Sortable_tables#Configuring_the_sorting" title="Help:Sortable tables">Help:Sortable tables § Configuring the sorting</a> and <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><a href="/wiki/Help:Sortable_tables#Date_sorting_problems" title="Help:Sortable tables">Help:Sortable tables § Date sorting problems</a>, or consider using <code>{{<a href="/wiki/Template:Dts" class="mw-redirect" title="Template:Dts">dts</a>|Nov 1, 2008}}</code>.</li> <li>Phrases such as <a href="/wiki/Fourth_of_July" class="mw-redirect" title="Fourth of July">Fourth of July</a> (or July Fourth, but not July 4th), <a href="/wiki/Cinco_de_Mayo" title="Cinco de Mayo">Cinco de Mayo</a>, <a href="/wiki/Seventh_of_March_Speech" class="mw-redirect" title="Seventh of March Speech">Seventh of March Speech</a>, and <a href="/wiki/Independence_Day_(Brazil)" title="Independence Day (Brazil)">Sete de Setembro</a> are proper names, to which rules for dates do not apply (A typical Fourth of July celebration includes fireworks).</li></ul> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATESNO&redirect=no">MOS:DATESNO</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:BADDATE&redirect=no">MOS:BADDATE</a></li></ul></div></div> <table class="wikitable"> <caption>Unacceptable date formats (except in <a href="#ExternException">external titles and quotes</a>) </caption> <tbody><tr> <th style="width:95pt;"><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/11px-X_mark.svg.png" decoding="async" width="11" height="13" class="mw-file-element" data-file-width="525" data-file-height="600"></noscript><span class="lazy-image-placeholder" style="width: 11px;height: 13px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/11px-X_mark.svg.png" data-alt="" data-width="11" data-height="13" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/17px-X_mark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/22px-X_mark.svg.png 2x" data-class="mw-file-element">  Unacceptable </th> <th style="width:80pt;"><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png" decoding="async" width="11" height="11" class="mw-file-element" data-file-width="600" data-file-height="600"></noscript><span class="lazy-image-placeholder" style="width: 11px;height: 11px;" data-src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png" data-alt="" data-width="11" data-height="11" data-srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/17px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/22px-Yes_check.svg.png 2x" data-class="mw-file-element">  Corrected </th> <th>Comments </th></tr> <tr> <td>Sep. 2 </td> <td>Sep 2<a href="#cite_note-brevity-3">[c]</a> </td> <td rowspan="2">Do not add a full stop (period) to an abbreviated month or to the <a href="/wiki/Ordinal_indicator#Ordinal_dot" title="Ordinal indicator">day-of-month</a>.<a href="#cite_note-6">[f]</a> </td></tr> <tr> <td>9. June </td> <td rowspan="5">9 June or June 9 </td></tr> <tr> <td>9 june june 9 </td> <td>Months should be capitalized. </td></tr> <tr> <td>9th June June 9th the 9th of June </td> <td>Do not use <a href="/wiki/Ordinal_numeral" title="Ordinal numeral">ordinals</a> (1st, 2nd, 3rd, etc.). </td></tr> <tr> <td>09-06 06-09 </td> <td>Do not use these formats. </td></tr> <tr> <td>09 June June 09 </td> <td>Do not zero-pad day ... </td></tr> <tr> <td>2007-4-15 </td> <td rowspan="6">2007-04-15<a href="#cite_note-brevity-3">[c]</a> </td> <td>... except in all-numeric (<var style="padding-right: 1px;">yyyy</var>-<var style="padding-right: 1px;">mm</var>-<var style="padding-right: 1px;">dd</var>) format, in which month and day are zero-padded to two digits. </td></tr> <tr> <td>2007/04/15 </td> <td>Do not use separators other than hyphens. </td></tr> <tr> <td>20070415 </td> <td>Do not omit hyphens. </td></tr> <tr> <td>07-04-15 </td> <td>Do not abbreviate year. </td></tr> <tr> <td>15-04-2007 04-15-2007 2007-15-04 </td> <td>Do not use <var style="padding-right: 1px;">dd</var>-<var style="padding-right: 1px;">mm</var>-<var style="padding-right: 1px;">yyyy</var>, <var style="padding-right: 1px;">mm</var>-<var style="padding-right: 1px;">dd</var>-<var style="padding-right: 1px;">yyyy</var> or <var style="padding-right: 1px;">yyyy</var>-<var style="padding-right: 1px;">dd</var>-<var style="padding-right: 1px;">mm</var> formats.<a href="#cite_note-7">[g]</a> </td></tr> <tr> <td>2007 April 15 2007 Apr 15 </td> <td>Do not use these formats. </td></tr> <tr> <td>7/2001 7-2001 07-2001 2001-07 2001 July July of 2001 </td> <td rowspan="2">July 2001 </td> <td>Do not use these formats. </td></tr> <tr> <td>July, 2001 </td> <td rowspan="2">No comma between month and year. </td></tr> <tr> <td>3 July, 2001 </td> <td>3 July 2001 </td></tr> <tr> <td>July 3 2001 </td> <td>July 3, 2001 </td> <td>Comma required between day and year. </td></tr> <tr> <td>the '97 elections the 97 elections </td> <td>the 1997 elections </td> <td>Do not abbreviate year. </td></tr> <tr> <td>Copyright MMII </td> <td>Copyright 2002 </td> <td><a href="/wiki/Roman_numerals" title="Roman numerals">Roman numerals</a> are not normally used for dates. </td></tr> <tr> <td>Two thousand one </td> <td>2001 </td> <td rowspan="2">Years and days of the month are not normally written in words. </td></tr> <tr> <td>the first of May May the first </td> <td>1 May or May 1 </td></tr> <tr> <td>June 0622 </td> <td>June 622 </td> <td>Do not zero-pad years. </td></tr> <tr> <td>June 2,015 </td> <td>June 2015 </td> <td>Do not add a comma to a four-digit year. </td></tr> <tr> <td>sold in the year 1995 </td> <td>sold in 1995 </td> <td>Write "the year" only where needed for clarity (About 200 ships arrived in the year 300). </td></tr></tbody></table> <div class="mw-heading mw-heading5"><h5 id="Consistency" data-mw-thread-id="h-Consistency-Formats">Consistency</h5> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=8" title="Edit section: Consistency" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATEUNIFY&redirect=no">MOS:DATEUNIFY</a></li></ul></div></div> <div><ul><li>Dates in article body text<a href="#cite_note-body-8">[h]</a> should all use the same format: She fell ill on 25 June 2005 and died on 28 June, not She fell ill on 25 June 2005 and died on June 28.</li><li>Publication dates in an article's citations should all use the same format, which may be:<div><ul><li>the format used in the article body text,</li><li>an abbreviated format from the <a href="#Dates_and_years">"Acceptable date formats" table</a>, provided the day and month elements are in the same order as in dates in the article body</li><li>the format expected in the <a href="/wiki/Wikipedia:Citing_sources#Citation_style" title="Wikipedia:Citing sources">citation style</a> being used (but all-numeric date formats other than <var style="padding-right: 1px;">yyyy</var>-<var style="padding-right: 1px;">mm</var>-<var style="padding-right: 1px;">dd</var> must still be avoided).</li></ul></div> For example, publication dates within a single article might be in one, but only one, of these formats (among others):<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist" style="margin-left: 1.5em"><ul><li>Jones, J. (20 September 2008)</li><li>Jones, J. (September 20, 2008)</li></ul></div> If an article uses a template such as <code>{{<a href="/wiki/Template:Use_mdy_dates" title="Template:Use mdy dates">Use mdy dates</a>}}</code> or <code>{{<a href="/wiki/Template:Use_dmy_dates" title="Template:Use dmy dates">Use dmy dates</a>}}</code>, then <a href="/wiki/Help:Citation_Style_1" title="Help:Citation Style 1">Citation Style 1</a> and <a href="/wiki/Help:Citation_Style_2" title="Help:Citation Style 2">2</a> templates automatically render dates (<code class="tpl-para" style="word-break:break-word;">|date=</code>, <code class="tpl-para" style="word-break:break-word;">|access-date=</code>, <code class="tpl-para" style="word-break:break-word;">|archive-date=</code>, etc) in the specified format, regardless of the format they are entered in. (The <code class="tpl-para" style="word-break:break-word;">|cs1-dates=</code> parameter can be used to fine-tune the generated output, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see <a href="/wiki/Template:Use_mdy_dates#Auto-formatting_citation_template_dates" title="Template:Use mdy dates">Template:Use mdy dates § Auto-formatting citation template dates</a>.)</li><li>Access and archive dates in an article's citations should all use the same format, which may be:<div><ul><li>the format used for publication dates in the article (see above);</li><li>the format expected in the citation style adopted in the article; or</li><li><var style="padding-right: 1px;">yyyy</var>-<var style="padding-right: 1px;">mm</var>-<var style="padding-right: 1px;">dd</var></li></ul></div> For example, access/archive dates within a single article might be in one, but only one, of these formats (among others):<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist" style="margin-left: 1.5em"><ul><li>Jones, J. (September 20, 2008) ... Retrieved February 5, 2009.</li><li>Jones, J. (20 Sep 2008) ... Retrieved 5 Feb 2009.</li><li>Jones, J. (20 September 2008) ... Retrieved 2009-02-05.</li></ul></div> When a citation style does not expect differing date formats, it is permissible to normalize publication dates to the article body text date format, and/or access/archive dates to either, with date consistency being preferred.</li></ul></div> <div class="mw-heading mw-heading5"><h5 id="Strong_national_ties_to_a_topic" data-mw-thread-id="h-Strong_national_ties_to_a_topic-Formats">Strong national ties to a topic</h5> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=9" title="Edit section: Strong national ties to a topic" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATETIES&redirect=no">MOS:DATETIES</a></li></ul></div></div> For any given article, the choice of date format and the choice of national variety of English (see <a href="/wiki/Wikipedia:Manual_of_Style#Strong_national_ties_to_a_topic" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Strong national ties to a topic</a>) are independent issues. <ul><li>Articles on topics with strong ties to a particular English-speaking country should generally use the date format most commonly used in that nation. For the United States this is (for example) July 4, 1976; for most other English-speaking countries it is 4 July 1976.</li> <li>Articles related to Canada may use either format with (as always) consistency within each article. (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see Retaining existing format)</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:MILFORMAT&redirect=no">MOS:MILFORMAT</a></li></ul></div></div> In topics where a date format that differs from the usual national one is in customary usage, that format should be used for related articles: for example, articles on the modern US military, including biographical articles related to the modern US military, should use day-before-month, in accordance with US military usage.</li></ul> <div class="mw-heading mw-heading5"><h5 id="Retaining_existing_format" data-mw-thread-id="h-Retaining_existing_format-Formats">Retaining existing format</h5> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=10" title="Edit section: Retaining existing format" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATERET&redirect=no">MOS:DATERET</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATEVAR&redirect=no">MOS:DATEVAR</a></li></ul></div></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Wikipedia:Manual_of_Style#Retaining_existing_styles" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Retaining existing styles</a></div> <ul><li>If an article has evolved using predominantly one date format, this format should be used throughout the article, unless there are reasons for changing it based on the topic's strong ties to a particular English-speaking country, or consensus on the article's talk page.</li> <li>The date format chosen in the first major contribution in the early stages of an article (i.e., the first non-stub version) should continue to be used, unless there is reason to change it based on the topic's strong ties to a particular English-speaking country, or consensus on the article's talk page.</li> <li>Where an article has shown no clear sign of which format is used, the first person to insert a date is equivalent to "the first major contributor".</li></ul> <div class="mw-heading mw-heading4"><h4 id="Era_style" data-mw-thread-id="h-Era_style-Dates,_months,_and_years">Era style</h4> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=11" title="Edit section: Era style" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"WP:BCE" redirects here. For the copyediting guide, see <a href="/wiki/Wikipedia:Basic_copyediting" title="Wikipedia:Basic copyediting">Wikipedia:Basic copyediting</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:ERA&redirect=no">MOS:ERA</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:BCE&redirect=no">MOS:BCE</a></li></ul></div></div> <ul><li>The default <a href="/wiki/Calendar_era" title="Calendar era">calendar eras</a> are <a href="/wiki/Anno_Domini" title="Anno Domini">Anno Domini</a> (BC and AD) and <a href="/wiki/Common_Era" title="Common Era">Common Era</a> (BCE and CE). Either convention may be appropriate for use in Wikipedia articles depending on the article context. Apply <a href="/wiki/Wikipedia:Manual_of_Style#Retaining_existing_styles" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Retaining existing styles</a> with regard to changes from one era to the other. <ul><li>Use either the BC–AD or the BCE–CE notation consistently within the same article. Exception: do not change <a href="/wiki/MOS:QUOTE" class="mw-redirect" title="MOS:QUOTE">direct quotations</a>, titles, etc.</li> <li>An article's established era style should not be changed without reasons specific to its content; seek consensus on the talk page first (applying <a href="/wiki/Wikipedia:Manual_of_Style#Retaining_existing_styles" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Retaining existing styles</a>) by opening a discussion under a heading using the word era, or another similarly expressive heading, and briefly stating why the style should be changed.</li> <li>BCE and CE or BC and AD are written in upper case, unspaced, without a full stop (period), and separated from the numeric year by a space (5 BC, not 5BC). It is advisable to use a <a href="/wiki/Wikipedia:Manual_of_Style#Non-breaking_spaces" title="Wikipedia:Manual of Style">non-breaking space</a>.</li> <li>AD appears before or after a year (AD 106, 106 AD); BCE, CE, and BC always appear after (106 CE, 3700 BCE, 3700 BC).</li> <li>In general, omit CE or AD, except to avoid ambiguity or awkwardness. <ul><li>Typically, write The <a href="/wiki/Norman_Conquest" title="Norman Conquest">Norman Conquest</a> took place in 1066 not 1066 CE or AD 1066.</li> <li>But <a href="/wiki/Plotinus" title="Plotinus">Plotinus</a> lived at the end of the 3rd century AD (not simply at the end of the 3rd century) may avoid confusion unless the era is clear from context.</li> <li>One- and two-digit years may look more natural with an era marker (born in 2 AD or born January 15, 22 CE, not born in 2 nor January 15, 22).</li> <li>Ranges beginning in BC / BCE should specify the ending era: write 450 to 200 BCE or 450 BC to 200 BC or 450 BCE to 200 CE, but not 450 BCE to 200. (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see <a href="#Ranges">Ranges</a>)</li></ul></li></ul></li> <li>Uncalibrated (BCE) radiocarbon dates: <a href="/wiki/Calibrated_years" class="mw-redirect" title="Calibrated years">Calibrated and uncalibrated</a> dates can diverge widely, and some sources distinguish the two only via BCE or BC (for calibrated dates) versus bce or bc (uncalibrated). When feasible, avoid uncalibrated dates except in direct quotations, and even then ideally give the calibrated date in a footnote or square-bracketed note – [3250 BCE calibrated], or at least indicate the date type – [uncalibrated]. This also applies to other dating systems in which a calibration distinction is drawn.</li> <li>BP or YBP: In scientific and academic contexts, BP (Before Present) or YBP (years Before Present) are often used. (Present in this context by convention refers to January 1, 1950.) Write 3000 years BP or 3000 YBP or 3000 years before present but not forms such as 3000 before present and 3000 years before the present. If one of the abbreviated forms is used, link to <a href="/wiki/Before_Present" title="Before Present">Before Present</a> on first use: The Jones artifact was dated to 4000 <a href="/wiki/Before_present" class="mw-redirect" title="Before present">YBP</a>, the Smith artifact to 5000 YBP.</li> <li>Other era systems may be appropriate in an article. In such cases, dates should be followed by a conversion to Anno Domini or Common Era, and the first instance linked: Qasr-al-Khalifa was built in 221 <a href="/wiki/Hijri_year" title="Hijri year">AH</a> (836 CE), or in 836 AD (221 <a href="/wiki/Hijri_year" title="Hijri year">AH</a>). <ul><li><a href="/wiki/Astronomical_year_numbering" title="Astronomical year numbering">Astronomical year numbering</a> is similar to the Common Era. There is no need to follow a year expressed with astronomical year numbering with a conversion to Common Era. The first instance of a non-positive year should still be linked: The March equinox passed into Pisces in <a href="/wiki/Astronomical_year_numbering" title="Astronomical year numbering">year −67</a>. (The expressions −67 and 68 BCE refer to the same year.)</li></ul></li></ul> <div class="mw-heading mw-heading4"><h4 id="Julian_and_Gregorian_calendars" data-mw-thread-id="h-Julian_and_Gregorian_calendars-Dates,_months,_and_years">Julian and Gregorian calendars</h4> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=12" title="Edit section: Julian and Gregorian calendars" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:OSNS&redirect=no">MOS:OSNS</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:JG&redirect=no">MOS:JG</a></li></ul></div></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Old_Style_and_New_Style_dates" title="Old Style and New Style dates">Old Style and New Style dates</a></div> A date can be given in any appropriate calendar, as long as it is (at the minimum) given in the <a href="/wiki/Julian_calendar" title="Julian calendar">Julian calendar</a> or the <a href="/wiki/Gregorian_calendar" title="Gregorian calendar">Gregorian calendar</a> or both, as described below. For example, an article on the early <a href="/wiki/History_of_Islam" title="History of Islam">history of Islam</a> may give dates in both <a href="/wiki/Islamic_calendar" title="Islamic calendar">Islamic</a> and Julian calendars. Where a calendar other than the Julian or Gregorian is used, the article must make this clear. <ul><li>Current events are dated using the Gregorian calendar.</li> <li>Dates of events in countries using the Gregorian calendar at that time are given in the Gregorian calendar. This includes some of the <a href="/wiki/Gregorian_calendar#Timeline" title="Gregorian calendar">Continent of Europe from 1582</a>, the <a href="/wiki/British_Empire" title="British Empire">British Empire</a> from 14 September 1752, and Russia from 14 February 1918 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(see <a href="/wiki/Adoption_of_the_Gregorian_calendar" title="Adoption of the Gregorian calendar">Adoption of the Gregorian calendar</a>).</li> <li>Dates before 15 October 1582 (when the Gregorian calendar was first adopted in some places) are normally given in the Julian calendar.</li> <li>Dates after 4 October 1582 in a place where the Julian calendar was observed should be given in the Julian calendar.</li> <li>For either the Julian or Gregorian calendars, the beginning of the year should be treated as 1 January even if a different start-of-year date was observed in the place being discussed.</li> <li>Dates for Roman history before 45 BC are given in the <a href="/wiki/Roman_calendar" title="Roman calendar">Roman calendar</a>, which was neither Julian nor Gregorian. When (rarely) the Julian equivalent is certain, it may be included.</li> <li>For dates in early Egyptian and Mesopotamian history, Julian or Gregorian equivalents are often uncertain. Follow the consensus of reliable sources, or indicate their divergence.</li></ul> The dating method used should follow that used by reliable secondary sources (or if reliable sources disagree, that used most commonly, with an explanatory <a href="/wiki/Help:Footnotes" title="Help:Footnotes">footnote</a>). The guidance above is in line with the usage of reliable sources such as <a href="/wiki/American_National_Biography" title="American National Biography">American National Biography</a>,<a href="#cite_note-9">[1]</a> <a href="/wiki/Oxford_Dictionary_of_National_Biography" class="mw-redirect" title="Oxford Dictionary of National Biography">Oxford Dictionary of National Biography</a>, and <a href="/wiki/Encyclop%C3%A6dia_Britannica" title="Encyclopædia Britannica">Encyclopædia Britannica</a>.<a href="#cite_note-10">[i]</a> Where it is not obvious that a given date should be given in Julian alone or in Gregorian alone, consider giving both styles, for example by using {{<a href="/wiki/Template:OldStyleDate" title="Template:OldStyleDate">OldStyleDate</a>}}. If a date appears without being specified as Old Style or New Style, tagging that date with {{<a href="/wiki/Template:Which_calendar%3F" class="mw-redirect" title="Template:Which calendar?">which calendar?</a>}} will add the page to <a href="/wiki/Category:Articles_containing_ambiguous_dates" title="Category:Articles containing ambiguous dates">Category:Articles containing ambiguous dates</a> for further attention. If an article contains Julian calendar dates after 4 October 1582 (as in the <a href="/wiki/October_Revolution" title="October Revolution">October Revolution</a>), or if a start-of-year date other than 1 January was in force in the place being discussed, or both, a footnote should be provided on the first usage, explaining the calendar usage adopted for the article. The calendar usage should be compatible with this guideline. <div class="mw-heading mw-heading4"><h4 id="Ranges" data-mw-thread-id="h-Ranges-Dates,_months,_and_years">Ranges</h4> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=13" title="Edit section: Ranges" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATERANGE&redirect=no">MOS:DATERANGE</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DOB&redirect=no">MOS:DOB</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:YEARRANGE&redirect=no">MOS:YEARRANGE</a></li></ul></div></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Wikipedia:Manual_of_Style#Number_ranges" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Number ranges</a></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"MOS:DIED" redirects here. For euphemisms for "died", see <a href="/wiki/Wikipedia:Manual_of_Style/Words_to_watch#Euphemisms" title="Wikipedia:Manual of Style/Words to watch">Wikipedia:Manual of Style/Words to watch § Euphemisms</a>.</div> <ul><li>A simple year–year range is written using an <a href="/wiki/En_dash" class="mw-redirect" title="En dash">en dash</a> (<code>–</code>, <code>&ndash;</code> or <code>{{<a href="/wiki/Template:Ndash" class="mw-redirect" title="Template:Ndash">ndash</a>}}</code>, or <code>{{<a href="/wiki/Template:Nbnd" class="mw-redirect" title="Template:Nbnd">nbnd</a>}}</code> for a non-breaking en dash), not an em dash, hyphen, or slash; this dash is unspaced (that is, with no space on either side); and the end year is usually given in full: <ul><li>1881–1882; 1881–1886 (not 1881–86); 1881–1892 (not 1881–92) <ul><li>Markup: <code>1881{{<a href="/wiki/Template:Ndash" class="mw-redirect" title="Template:Ndash">ndash</a>}}1882</code> or <code>1881&ndash;1882</code></li></ul></li> <li>Although non-abbreviated years are generally preferred, two-digit ending years (1881–82, but never 1881–882 or 1881–2) may be used in any of the following cases: (1) two consecutive years; (2) <a href="/wiki/Wikipedia:Manual_of_Style/Infoboxes" title="Wikipedia:Manual of Style/Infoboxes">infoboxes</a> and tables where space is limited (using a single format consistently in any given table column); and (3) in certain topic areas if there is a very good reason, such as matching the established convention of reliable sources.<a href="#cite_note-11">[j]</a> For consistency, avoid abbreviated year ranges when they would be used alongside non-abbreviated ranges within an article (or related pages, if in titles). Never use abbreviated years for ranges across centuries (1999–2000, not 1999–00) or for years from the first millennium (886–887, not 886–87).</li> <li>The <style data-mw-deduplicate="TemplateStyles:r1238216509">.mw-parser-output .vanchor>:target~.vanchor-text{background-color:#b1d2ff}@media screen{html.skin-theme-clientpref-night .mw-parser-output .vanchor>:target~.vanchor-text{background-color:#0f4dc9}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .vanchor>:target~.vanchor-text{background-color:#0f4dc9}}</style>slash notation (2005/2006) may be used to signify a fiscal year or other special period, if that convention is used in reliable sources.</li></ul></li> <li>Other "simple" ranges use an unspaced en dash as well: <ul><li>day–day: 5–7 January 1979; January 5–7, 1979; elections were held March 5–8.</li> <li>month–month: the 1940 peak period was May–July; the peak period was May–July 1940; (but the peak period was May 1940 – July 1940 uses a spaced en dash; <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see below)</li></ul></li> <li>In certain cases where at least one item on either side of the en dash contains a space, then a spaced en dash (<code>{{<a href="/wiki/Template:Snd" class="mw-redirect" title="Template:Snd">snd</a>}}</code>) is used. For example: <ul><li>between specific dates in different months: They travelled June 3 – August 18, 1952; They travelled 3 June – 18 August 1952</li> <li>between dates in different years: <ul><li>Charles Robert Darwin (12 February 1809 – 19 April 1882) was an English naturalist ... <ul><li>Markup: <code>12{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}February 1809{{<a href="/wiki/Template:Snd" class="mw-redirect" title="Template:Snd">snd</a>}}19{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}April 1882</code> or <code>12&nbsp;February 1809&nbsp;&ndash; 19&nbsp;April 1882</code></li></ul></li> <li>Abraham Lincoln (February 12, 1809 – April 15, 1865) was the 16th president of ...</li></ul></li> <li>between months in different years: The exception was in force August 1892 – January 1903; The Ghent Incursion (March 1822 – January 1, 1823) was ended by the New Year's Treaty <ul><li>Markup: <code>March 1822{{<a href="/wiki/Template:Snd" class="mw-redirect" title="Template:Snd">snd</a>}}January{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}1, 1823</code> or <code>March 1822&nbsp;&ndash; January&nbsp;1, 1823</code></li></ul></li> <li>Where era designations, c. or other modifiers are present (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see <a href="#Uncertain,_incomplete,_or_approximate_dates">§ Uncertain, incomplete, or approximate dates</a>): <ul><li>if the modifier applies to only one of the two endpoints of the range, use a spaced en dash: 150 BCE – 50 BCE, 5 BC – 12 AD, c. 1393 – 1414</li> <li>if the modifier applies to the range as a whole, disregard the modifier: 150–50 BCE, reigned 150 BCE – 50 BCE, reigned 150–50 BCE, <abbr title="reigned">r.</abbr> c. 1393 – 1414, r. 1393–1414.</li></ul></li></ul></li> <li>Use an en dash, or a word such as from or between, but not both: from 1881 to 1886 (not from 1881–1886); between June 1 and July 3 (not between June 1 – July 3)</li></ul> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DATETOPRES&redirect=no">MOS:DATETOPRES</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:TOPRESENT&redirect=no">MOS:TOPRESENT</a></li></ul></div></div> <ul><li><a href="/wiki/MOS:DATED" class="mw-redirect" title="MOS:DATED">MOS:DATED</a> says "terms such as ... 'present' should usually be avoided". For ranges, if "to present" or "–present" is used, the current year (or, in cases where necessary, date) of "present" at the time of writing should be included. Thus 1982–present (as of 2024) – if writing in 2024 – is preferable to 1982–present. If the "from" date has an internal space, a spaced en dash is used. Other constructions may be more appropriate in prose <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(see <a href="#Statements_likely_to_become_outdated">§ Statements likely to become outdated</a>). An alternative form is Since 1982.</li></ul> <dl><dd>In tables and infoboxes where space is limited, pres. may be used (1982–pres.). Do not use incomplete-looking constructions such as 1982– and 1982–... . <ul><li>Consider adding the {{<a href="/wiki/Template:As_of" title="Template:As of">As of</a>}}, or {{<a href="/wiki/Template:Update_after" title="Template:Update after">Update after</a>}} templates to such constructions, depending on how important it is for editors to keep "present" up to date.</li></ul></dd></dl> <ul><li>For a person still living: Serena Williams (born September 26, 1981) is a ..., not (September 26, 1981 – ) or (born on September 26, 1981).Do not use <code>*</code> to indicate born; use <code>b.</code> only where space is limited, e.g., in tables and infoboxes; use either <code>born</code> or <code>b.</code> consistently in any given table column.</li> <li>Where birthdate is unknown: John Smith (died May 1, 1622) or John Smith (died 1622)Do not use <code>†</code> to indicate died; use <code>d.</code> only where space is limited, with consistency within any given table column.</li> <li>An overnight period may be expressed using a slash between two contiguous dates: the night raids of 30/31 May 1942 or raids of 31 May / 1 June 1942.Or use an en dash: (unspaced) raids of 30–31 May 1942; (spaced) raids of 31 May – 1 June 1942.</li> <li>The <code>{{<a href="/wiki/Template:Age" title="Template:Age">Age</a>}}</code> template can keep ages current in infoboxes and so on: <ul><li><code>{{age|1989|7|23}}</code> returns: 35</li> <li><code>{{age|1989|7|23}}-year-old</code> returns: 35-year-old</li> <li><code>{{age|1989|7|23}} years old</code> returns: 35 years old</li></ul></li> <li><a href="/wiki/Category:Date_mathematics_templates" title="Category:Date mathematics templates">Date mathematics templates</a> are available for other age calculations.</li></ul> <div class="mw-heading mw-heading4"><h4 id="Uncertain,_incomplete,_or_approximate_dates" data-mw-thread-id="h-Uncertain,_incomplete,_or_approximate_dates-Dates,_months,_and_years">Uncertain, incomplete, or approximate dates</h4> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=14" title="Edit section: Uncertain, incomplete, or approximate dates" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:APPROXDATE&redirect=no">MOS:APPROXDATE</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:CIRCA&redirect=no">MOS:CIRCA</a></li></ul></div></div> <ul><li>To indicate "around", "approximately", or "about", the use of the <code>{{<a href="/wiki/Template:Circa" title="Template:Circa">circa</a>}}</code> template is preferred at first occurrence over just c. At later occurrences, c. is preferred over circa, c, ca, ca., around, approximately, or approx.: <ul><li>John Sayer (<abbr title="circa">c.</abbr> 1750 – 2 October 1818) ...</li> <li>the Igehalkid dynasty of Elam, <abbr title="circa">c.</abbr> 1400 BC ...</li></ul></li> <li>Where both endpoints of a range are approximate, <code>c.</code> should appear before each date (the two-argument form of <code>{{<a href="/wiki/Template:Circa" title="Template:Circa">circa</a>}}</code> does this): <ul><li>Dionysius Exiguus (<abbr title="circa">c.</abbr> 470 – c. 540) ... (not Dionysius Exiguus (<abbr title="circa">c.</abbr> 470 – 540) ...)</li> <li>Rameses III (reigned <abbr title="circa">c.</abbr> 1180 – c. 1150 BCE) ... (not Rameses III (reigned <abbr title="circa">c.</abbr> 1180 – 1150 BCE) ...)</li></ul></li> <li>Where birth/death limits have been inferred from known dates of activity: <ul><li>Offa of Mercia (before 734 – 26 July 796) ...</li> <li>Robert Menli Lyon (1789 – after 1863) ...</li> <li>Ambrose Gwinnett Bierce (June 24, 1842 – after December 26, 1913) ...</li></ul></li> <li>When birth and death dates are unknown, but the person is known to have been active ("flourishing") during certain years, fl., <code>[[Floruit|fl.]]</code>, or <code>{{<a href="/wiki/Template:Fl." class="mw-redirect" title="Template:Fl.">fl.</a>}}</code> may be used: <ul><li>Jacobus Flori (<a href="/wiki/Floruit" title="Floruit">fl.</a> 1571–1588) ...</li> <li>Jacobus Flori fils (fl. <abbr title="circa">c.</abbr> 1600 – 1616) ...</li></ul></li></ul> <dl><dd>The corresponding template <code>{{<a href="/wiki/Template:R." class="mw-redirect" title="Template:R.">r.</a>}}</code> produces reign output: <abbr title="reigned">r.</abbr> 540–562, though it is often clearer to write out reigned 540–562, especially in the lead. With both of these templates, linked forms should not be used on disambiguation pages, and "active" followed by the range is a better alternative for occupations not relating to the composition of works, whether it be musical, grammatical, historical, or any other such work.</dd></dl> <ul><li>When a date is known to be either of two years (e.g. from a <a href="/wiki/Regnal_years_of_English_monarchs" class="mw-redirect" title="Regnal years of English monarchs">regnal</a> or <a href="/wiki/Hijri_year" title="Hijri year">AH</a> year conversion, or a known age at death): <ul><li>Anne Smith (born 1912 or 1913; died 2013) ...</li></ul></li> <li>Other forms of uncertainty should be expressed in words, either in article text or in a footnote: April 14, 1224 (unattested date). Do not use a question mark (1291?), because it fails to communicate the nature of the uncertainty.</li> <li>Where c. or a similar form appears which applies only to one of the two endpoints of the range, use a spaced en dash (<code>{{snd}}</code>). <ul><li>Examples: 1896 – after 1954, 470 – <abbr title="circa">c.</abbr> 540, <abbr title="circa">c.</abbr> 470 – 540, <abbr title="circa">c.</abbr> 470 – c. 540.</li> <li>Markup: <code>1896{{snd}}after 1954</code>, <code>470{{snd}}{{c.|540}}</code>, <code>{{c.|470}}{{snd}}540</code>, <code>{{c.|470|540}}</code>.</li></ul></li> <li>Where a modifier applies to the range as a whole, such as fl. and <abbr title="reigned">r.</abbr>, use a spaced or unspaced en dash as appropriate to the range if this modifier is disregarded. <ul><li>Examples: <a href="/wiki/Floruit" title="Floruit">fl.</a> 1571–1588, fl. <abbr title="circa">c.</abbr> 1600 – 1616, <abbr title="reigned">r.</abbr> <abbr title="circa">c.</abbr> 1353 – 1336 BC, r. 1989–2019 CE, r. 2019 CE – present.</li></ul></li> <li>Some modifiers, such as traditionally, around, BH, and CE, sometimes apply to only one endpoint, and sometimes to the whole range. Whether the en dash should be spaced or unspaced should still be determined by the above guidelines, but consider rephrasing if the result is ambiguous or possibly confusing. <ul><li>traditionally 1571–1588 and traditionally 1571 – 1588 mean two different things, which may not be obvious to the reader.</li> <li>traditionally 1585 – <abbr title="circa">c.</abbr> 1590 can have two different meanings, and which one is meant may not be clear.</li> <li>400 BCE – 200 clearly has BCE applying only to one endpoint, but the range is ambiguous. Consider using 400–200 BCE, 400 BCE – 200 BCE, or 400 BCE – 200 CE, depending on what is meant.</li> <li>Technically, <a href="/wiki/Taish%C5%8D" class="mw-redirect" title="Taishō">Taishō</a> 13 – 57 is currently unambiguous (because there is no Taishō 57), but it is better to use both era designations in this case: <a href="/wiki/Taish%C5%8D" class="mw-redirect" title="Taishō">Taishō</a> 13 – <a href="/wiki/Sh%C5%8Dwa_(1926%E2%80%931989)" class="mw-redirect" title="Shōwa (1926–1989)">Shōwa</a> 57.</li></ul></li> <li>Ideally a non-breaking space should follow very short modifiers such as c., fl., r., <abbr title="born">b.</abbr>, and <abbr title="died">d.</abbr></li></ul> <div class="mw-heading mw-heading3"><h3 id="Times_of_day" data-mw-thread-id="h-Times_of_day-Chronological_items">Times of day</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=15" title="Edit section: Times of day" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:TIME&redirect=no">MOS:TIME</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:AMPM&redirect=no">MOS:AMPM</a></li></ul></div></div> Context determines whether the <a href="/wiki/12-hour_clock" title="12-hour clock">12-</a> or <a href="/wiki/24-hour_clock" title="24-hour clock">24-hour</a> clock is used. In all cases, colons separate hours, minutes, and (where present) seconds, e.g. 1:38:09 pm or 13:38:09. Use figures (11 a.m. or 12:45 p.m.) rather than words (twelve forty-five p.m.). <ul><li>12-hour clock times end with lower-case a.m. or p.m., or am or pm, preceded by a <a href="#Non-breaking_spaces">non-breaking space</a>, e.g. 2:30 p.m. or 2:30 pm (markup: <code>2:30{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}p.m.</code> or <code>2:30{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}pm</code>), not 2:30p.m. or 2:30pm. Hours should not have a leading zero (e.g. 2:30 p.m., not 02:30 p.m.). Usually, use noon and midnight rather than 12 pm and 12 am; whether "midnight" refers to the start or the end of a date should be explicitly specified unless clear from the context. Where several times that are all a.m. or all p.m. appear in close proximity, then a.m. or p.m. need be given only once if there is no risk of confusion.</li> <li>24-hour clock times have no a.m., p.m., noon or midnight suffix, and include a colon (15:30 not 1530). Hours under 10 should have a leading zero (08:15). The time 00:00 refers to midnight at the start of a date, 12:00 to noon, and 24:00 to midnight at the end of a date, but 24 should not be used for the first hour of the next day (e.g. use 00:10 for ten minutes after midnight, not 24:10).</li></ul> <div class="mw-heading mw-heading4"><h4 id="Time_zones" data-mw-thread-id="h-Time_zones-Times_of_day">Time zones</h4> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=16" title="Edit section: Time zones" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:TIMEZONE&redirect=no">MOS:TIMEZONE</a></li></ul></div></div> Give dates and times appropriate to the <a href="/wiki/Time_zone" title="Time zone">time zone</a> where an event took place. For example, the date of the <a href="/wiki/Attack_on_Pearl_Harbor" title="Attack on Pearl Harbor">attack on Pearl Harbor</a> should be December 7, 1941 (Hawaii time/date). Give priority to the place at which the event had its most significant effects; for example, if a hacker in Monaco attacked a Pentagon computer in the US, use the time zone for the Pentagon, where the attack had its effect. In some cases, the best solution may be to add the date and time in <a href="/wiki/Coordinated_Universal_Time" title="Coordinated Universal Time">Coordinated Universal Time</a> (UTC). For example: 8 p.m. <a href="/wiki/Eastern_Standard_Time_(North_America)" class="mw-redirect" title="Eastern Standard Time (North America)">Eastern Standard Time</a> on January 15, 2001 (01:00 UTC, January 16) Alternatively, include just the <a href="/wiki/UTC_offset" title="UTC offset">UTC offset</a>: 21:00 <a href="/wiki/British_Summer_Time" title="British Summer Time">British Summer Time</a> (<a href="/wiki/UTC%2B1" class="mw-redirect" title="UTC+1">UTC+1</a>) on 27 July 2012 Rarely, the time zone in which an event took place has since changed; for example, China until 1949 was divided into <a href="/wiki/Historical_time_zones_of_China" title="Historical time zones of China">five time zones</a>, whereas all of modern China is one time zone; <a href="/wiki/UTC%2B8" class="mw-redirect" title="UTC+8">UTC+8</a>. Similarly, the term "UTC" is not appropriate for dates before this system was adopted in 1960;<a href="#cite_note-12">[2]</a> <a href="/wiki/Universal_Time" title="Universal Time">Universal Time</a> (UT) is the appropriate term for the mean time at the <a href="/wiki/Prime_meridian_(Greenwich)" title="Prime meridian (Greenwich)">prime meridian (Greenwich)</a> when it is unnecessary to specify the precise definition of the time scale. Be sure to show the UTC or offset appropriate to the clock time in use at the time of the event, not the modern time zone, if they differ. <div class="mw-heading mw-heading3"><h3 id="Days_of_the_week" data-mw-thread-id="h-Days_of_the_week-Chronological_items">Days of the week</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=17" title="Edit section: Days of the week" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <ul><li>Where space is limited (e.g. tables), days of the week may be abbreviated as Sun, Mon, Tue, Wed, Thu, Fri, Sat (without dots, i.e. not Sun., Mon., etc.).</li></ul> <div class="mw-heading mw-heading3"><h3 id="Seasons_of_the_year" data-mw-thread-id="h-Seasons_of_the_year-Chronological_items">Seasons of the year</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=18" title="Edit section: Seasons of the year" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:SEASON&redirect=no">MOS:SEASON</a></li></ul></div></div> <ul><li>Avoid using seasons to refer to a particular time of year, as they are often unduly ambiguous: Spring 1995 began in the Southern Hemisphere six months after it did in the Northern Hemisphere; winter spans two calendar years in the Northern Hemisphere, but not in the Southern Hemisphere. Moreover, areas near the Equator have only <a href="/wiki/Wet_season" title="Wet season">wet</a> and <a href="/wiki/Dry_season" title="Dry season">dry seasons</a>. Unambiguous alternatives include early 1995; the second quarter of 1995; March to June 1995; spent the southern autumn in Antarctica. <ul><li>Referring to a season by name is appropriate when it is part of a conventional name or designation (annual mid-winter festival; the autumn harvest; the court's winter term; the magazine's summer 2015 issue).</li></ul></li> <li>Season names are generally not capitalized (a hot summer), except when personified (Old Man Winter) or when part of a formal name (2018 Winter Olympics; Arab Spring) that is capitalized under the <a href="/wiki/Wikipedia:Manual_of_Style/Capital_letters" title="Wikipedia:Manual of Style/Capital letters">guidelines for capitalization</a>. They are capitalized when part of the title of a work (Science Fiction Quarterly, Summer 1942), except that seasonal editions may be lower-cased in running text (the Summer 1985 issue of Interzone or the summer 1985 issue of Interzone).</li></ul> <div class="mw-heading mw-heading3"><h3 id="Decades" data-mw-thread-id="h-Decades-Chronological_items">Decades</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=19" title="Edit section: Decades" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DECADE&redirect=no">MOS:DECADE</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DECADES&redirect=no">MOS:DECADES</a></li></ul></div></div> <ul><li>To refer to a decade as a chronological period per se (not with reference to a social era or cultural phenomenon), always use four digits and an s, as in the 1980s. Do not use the 1980's, or the 1980‑ies. <ul><li>Prefixes should be hyphenated (the mid‑1980s; pre‑1960s social attitudes).</li> <li>Adjectives should not be hyphenated (the late 1950s, the early 1970s).</li></ul></li> <li>For a social era or cultural phenomenon associated with a particular decade: <ul><li>Two digits (with a preceding apostrophe) may be used as an alternative to four digits, but only in well-established phrases seen in reliable sources: the Roaring '20s; the Gay '90s; condemning the '60s counterculture—but grew up in 1960s Boston, moving to Dallas in 1971. Do not write: the 90's; the 90s; or the 90s'.</li> <li>Another alternative (where seen in reliable sources) is to spell the decade out, capitalized: changing attitudes of the Sixties.</li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="Centuries_and_millennia" data-mw-thread-id="h-Centuries_and_millennia-Chronological_items">Centuries and millennia</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=20" title="Edit section: Centuries and millennia" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:CENTURY&redirect=no">MOS:CENTURY</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:MILLENNIUM&redirect=no">MOS:MILLENNIUM</a></li></ul></div></div> The sequence of numbered years in dates runs ... 2 BC, 1 BC, 1 AD, 2 AD ...; there is no "<a href="/wiki/Year_zero" title="Year zero">year zero</a>". <ul><li>Treat the 1st century AD as years 1–100, the 17th century as 1601–1700, and the second millennium as 1001–2000; similarly, the 1st century BC / BCE was 100–1 BC / BCE, the 17th century BC / BCE was 1700–1601 BC / BCE, and the second millennium 2000–1001 BC / BCE.</li> <li>Centuries and millennia are identified using either Arabic numerals (the 18th century) or words (the second millennium), with in-article consistency (<a href="/wiki/MOS:ORDINAL" class="mw-redirect" title="MOS:ORDINAL">MOS:ORDINAL</a> notwithstanding). When used adjectivally they contain a hyphen (nineteenth-century painting or 19th-century painting). Do not use superscripts (19th century).</li> <li>Do not capitalize (the best Nineteenth-century paintings; during the Nineteenth Century)</li> <li>Do not use <a href="/wiki/Roman_numerals" title="Roman numerals">Roman numerals</a> (XVIII century).</li> <li>The 18th century refers to the period (1701–1800), while strictly the 1700s refers either to (1700–1799) or (1700–1709) <ul><li>When using forms such as the 1900s, ensure there is no ambiguity as to whether the century or the decade is meant.</li></ul></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">See <a href="/wiki/Wikipedia:Manual_of_Style#En_dashes" title="Wikipedia:Manual of Style">WP:Manual of Style § En dashes</a> for use of hyphens and dashes in obscure situations.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Long_periods_of_time" data-mw-thread-id="h-Long_periods_of_time-Chronological_items">Long periods of time</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=21" title="Edit section: Long periods of time" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <ul><li>When the term is frequent, combine yr (years) or ya (years ago) with k (thousand): kya, kyr; M (million): Mya, Myr; and b (<a href="/wiki/Long_and_short_scales" title="Long and short scales">short-scale</a> billion): bya, byr. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(See <a href="/wiki/Year#Abbreviations_yr_and_ya" title="Year">Year § Abbreviations yr and ya</a> for more information.)</li> <li>In academic contexts, <a href="/wiki/Year#Abbreviation" title="Year">annus</a>-based units are often used with an <a href="/wiki/SI_prefix" class="mw-redirect" title="SI prefix">SI prefix</a>: ka (kiloannus), Ma (megaannus), and Ga (gigaannus). <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(See <a href="/wiki/Year#SI_prefix_multipliers" title="Year">Year § SI prefix multipliers</a> for more information.)</li> <li>Show the meaning parenthetically, and consider linking to the appropriate section of the <a href="/wiki/Year" title="Year">Year</a> article <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(<a href="/wiki/Year#Abbreviations_yr_and_ya" title="Year">Year § Abbreviations yr and ya</a> or <a href="/wiki/Year#SI_prefix_multipliers" title="Year">Year § SI prefix multipliers</a>) on first occurrence and where the use is a standalone topic of interest. In source quotations, use square brackets: "a potassium-argon date of 35.1 Mya [million years ago] ..."</li></ul> </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(3)"><h2 id="Numbers" data-mw-thread-id="h-Numbers">Numbers</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=22" title="Edit section: Numbers" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-3 collapsible-block" id="mf-section-3"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"MOS:FIGURE" redirects here. Not to be confused with <a href="/wiki/MOS:IMAGE" class="mw-redirect" title="MOS:IMAGE">MOS:IMAGE</a>.</div> <div class="mw-heading mw-heading3"><h3 id="Numbers_as_figures_or_words" data-mw-thread-id="h-Numbers_as_figures_or_words-Numbers">Numbers as figures or words</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=23" title="Edit section: Numbers as figures or words" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:NUMERAL&redirect=no">MOS:NUMERAL</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:SPELL09&redirect=no">MOS:SPELL09</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:MILLION&redirect=no">MOS:MILLION</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:BILLION&redirect=no">MOS:BILLION</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:TRILLION&redirect=no">MOS:TRILLION</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:LAKH&redirect=no">MOS:LAKH</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:CRORE&redirect=no">MOS:CRORE</a></li></ul></div></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">Information on specific situations is scattered elsewhere on this page. Generally, in article text: <ul><li>Integers from zero to nine are spelled out in words.</li> <li>Integers greater than nine expressible in one or two words may be expressed either in numerals or in words (16 or sixteen, 84 or eighty-four, 200 or two hundred). When written as words, integers from 21 to 99 that are not multiples of 10 are hyphenated (including when part of a larger number): fifty-six and fifty-six thousand, but five hundred and five thousand.</li></ul> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:NUMNOTES&redirect=no">MOS:NUMNOTES</a></li></ul></div></div> Notes and exceptions: <ul><li>Avoid beginning a sentence with a figure: <ul><li>Use: There were many matches; 23 ended in a draw. Or: There were many matches. Twenty-three ended in a draw.</li> <li>Not: There were many matches. 23 ended in a draw.</li> <li>Use: No elections were held in 1945 and 1950.</li> <li>Not: 1945 and 1950 had no elections. (Nor: Nineteen forty-five and 1950 had no elections—comparable numbers near one another should all be written in words or all in figures.)</li></ul></li> <li>In tables and infoboxes, quantities are expressed in figures (Years in office: 5); but numbers within a table's explanatory text and comments follow the general rule.</li> <li>Numbers in mathematical formulae are never spelled out (3 < π < <style data-mw-deduplicate="TemplateStyles:r1214402035">.mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num{display:block;line-height:1em;margin:0.0em 0.1em;border-bottom:1px solid}.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0.1em 0.1em}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style>⁠22/7⁠ not three < pi < twenty-two sevenths), and "numbers as numbers" are rarely spelled out in other mathematical contexts (the first three primes are 2, 3, and 5 not the first three primes are two, three, and five; but zero-sum game and roots of unity).</li> <li>Sport scores and vote tallies should be given as numerical figures (a 25–7 victory; passed with 7 ayes, 2 nays, and 1 abstention, though passed with 7 ayes, 2 nays, and no abstentions would be acceptable, instead of ... 0 abstentions).</li> <li>Comparable values near one another should be all spelled out or all in figures, even if one of the numbers would normally be written differently: patients' ages were five, seven, and thirty-two or ages were 5, 7, and 32, but not ages were five, seven, and 32. <ul><li>Similar guidance applies where "mixed units" are used to represent a single value (as is often done with time durations, and in the imperial and US customary systems): 5 feet 11 inches tall; five feet eleven inches tall; 3 minutes 27 seconds; three minutes twenty-seven seconds.</li></ul></li> <li>Adjacent quantities not comparable should ideally be in different formats: twelve 90-minute volumes or 12 ninety-minute volumes, not 12 90-minute volumes or twelve ninety-minute volumes. <ul><li>Avoid awkward juxtapositions: On February 25, 2011, twenty-one more were chosen, not On February 25, 2011, 21 more were chosen.</li></ul></li> <li>Sometimes figures and words carry different meanings; for example, Every locker except one was searched implies there is a single exception (without specifying which), while Every locker except 1 was searched implies that locker number 1 was the only locker not searched.</li> <li>Proper names, technical terms, and the like are never altered: <a href="/wiki/10_Downing_Street" title="10 Downing Street">10 Downing Street</a>, <a href="/wiki/Nine_Inch_Nails" title="Nine Inch Nails">Nine Inch Nails</a>, <a href="/wiki/Channel_8_(Thailand)" title="Channel 8 (Thailand)">Channel 8</a>, <a href="/wiki/C7_vertebra" class="mw-redirect" title="C7 vertebra">C7 vertebra</a>, <a href="/wiki/The_Sixth_Sense" title="The Sixth Sense">The Sixth Sense</a>, <a href="/wiki/Chanel_No._5" title="Chanel No. 5">Chanel No. 5</a>, <a href="/wiki/Fourth_Estate" title="Fourth Estate">Fourth Estate</a>, <a href="/wiki/The_Third_Man" title="The Third Man">The Third Man</a>, <a href="/wiki/Second_Coming" title="Second Coming">Second Coming</a>, <a href="/wiki/First_Amendment" class="mw-redirect" title="First Amendment">First Amendment</a>, <a href="/wiki/Zero_Hour!" title="Zero Hour!">Zero Hour!</a>, "<a href="/wiki/Less_than_Zero_(Elvis_Costello_song)" title="Less than Zero (Elvis Costello song)">Less than Zero</a>".</li> <li>Figures as figures: Use a figure when the figure itself (its <a href="/wiki/Glyph" title="Glyph">glyph</a>, shape, etc.) is meant: a figure-8 pattern; in the shape of the numeral 6. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(See <a href="/wiki/Wikipedia:Manual_of_Style/Text_formatting#Words_as_words" title="Wikipedia:Manual of Style/Text formatting">Wikipedia:Manual of Style/Text formatting § Words as words</a>.)</li> <li>Only figures are used with unit symbols (12 min not twelve min); but figures or words may be used with unit names (12 minutes or twelve minutes), subject to the provisions above.</li></ul> Other numbers <ul><li>Other numbers are given in numerals (3.75, 544) or in forms such as 21 million (or billion, trillion, etc. – but rarely thousand or hundred). Markup: <code>21{{nbsp}}million</code> <ul><li>Billion and trillion are understood to represent their <a href="/wiki/Long_and_short_scale" class="mw-redirect" title="Long and short scale">short-scale</a> values of 109 (1,000,000,000) and 1012 (1,000,000,000,000), respectively. Keep this in mind when translating articles from non-English or older sources.</li> <li>M (unspaced, capitalized) or bn (unspaced), respectively, may be used for "million" or "billion" after a number, when the word has been spelled out at the first occurrence (Her estate of £61 million was split among her husband (£1M), her son (£5M), her butler (£10M), and her three Weimaraners (£15M each).).</li> <li>SI prefixes and symbols, such as mega- (M), giga- (G) and tera- (T), should be used only with units of measure as appropriate to the field and not to express large quantities in other contexts. Examples of misuse: In a population of 1.3G people, 300 megadeaths would be expected.</li> <li>Sometimes, the <a href="/wiki/Wikipedia:Manual_of_Style#National_varieties_of_English" title="Wikipedia:Manual of Style">variety of English</a> used in an article may suggest the use of a numbering system other than the Western thousands-based system. For example, the <a href="/wiki/Indian_numbering_system" title="Indian numbering system">Indian numbering system</a> is conventionally used for certain things (especially monetary amounts) in <a href="/wiki/South_Asian_English" title="South Asian English">South Asian English</a>. This is discouraged in Wikipedia articles by <a href="/wiki/Wikipedia:Manual_of_Style#Opportunities_for_commonality" title="Wikipedia:Manual of Style">WP:Manual of Style § Opportunities for commonality</a>. <ul><li>When it is done anyway, for contextually important reasons, link the first spelled-out instance of each quantity (e.g. <code>[[crore]]</code>, which yields: <a href="/wiki/Crore" title="Crore">crore</a>). If no instances are spelled out, provide a note after the first instance, directing the reader to the article about the numbering system.</li> <li>Provide a conversion to Western numbers for the first instance of each quantity (For Indian figures, the templates <code>{{<a href="/wiki/Template:Lakh" title="Template:Lakh">lakh</a>}}</code> and <code>{{<a href="/wiki/Template:Crore" title="Template:Crore">crore</a>}}</code> may be used for this purpose), and provide conversions for subsequent instances if they do not overwhelm the content of the article. For example, write three <a href="/wiki/Crore" title="Crore">crore</a> (thirty million). When converting a currency amount, use the exchange rate that applied at the time being written about; the <code>{{<a href="/wiki/Template:FXConvert" title="Template:FXConvert">FXConvert</a>}}</code> template can be used for this purpose, or specialized templates for a currency such as <code>{{<a href="/wiki/Template:INRConvert" title="Template:INRConvert">INRConvert</a>}}</code> (for Indian Rupees) or <code>{{<a href="/wiki/Template:KRWConvert" title="Template:KRWConvert">KRWConvert</a>}}</code> (for Korean Won) can be used.</li> <li>Group digits in Western thousands-based style (e.g., 30,000,000; not 3,00,00,000); <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see <a href="#Delimiting_(grouping_of_digits)">§ Delimiting (grouping of digits)</a>, below.</li> <li>An article's variety of English does not uniquely determine its formatting of numbers. Other considerations – such as conventions used in mathematics, science, and engineering – may also apply. In general, choice and order of formats and conversions is a matter of editorial discretion and consensus at the article.</li></ul></li></ul></li></ul> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:ORDINAL&redirect=no">MOS:ORDINAL</a></li></ul></div></div> <div class="mw-heading mw-heading3"><h3 id="Ordinals" data-mw-thread-id="h-Ordinals-Numbers">Ordinals</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=24" title="Edit section: Ordinals" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"MOS:1ST" redirects here. For the guideline on the first sentence in articles, see <a href="/wiki/MOS:FIRST" class="mw-redirect" title="MOS:FIRST">MOS:FIRST</a>.</div> <ul><li>The general principles set out in <a href="#Numbers_as_figures_or_words">§ Numbers as figures or words</a> apply to ordinals. In particular, do not start a sentence with a figure, and generally use first through ninth, not 1st through 9th, for single-digit ordinals.</li> <li>In "suffix" forms, use two-letter suffixes: 1st, 2nd, 3rd, 4th and so on (2nd Battalion not 2d Battalion). Do not superscript (e.g. 123rd).</li> <li>Do not use ordinals for dates (see <a href="/wiki/MOS:BADDATE" class="mw-redirect" title="MOS:BADDATE">MOS:BADDATE</a>).</li> <li>In English text, do not use a dot (.) or the <a href="/wiki/Ordinal_indicator" title="Ordinal indicator">ordinal indicator</a> (º). The masculine º or feminine ª ordinal indicator is acceptable in names, quotations, etc. from languages that conventionally use it. An Italian example: 313º Gruppo Addestramento Acrobatico not 313º Acrobatic Training Group or the 313º. Use HTML markup for languages that do not have a special character but conventionally use a superscript, like 2e in French.</li> <li><a href="/wiki/Regnal_number" title="Regnal number">Regnal numbers</a> are normally written with ASCII <a href="/wiki/Roman_numeral" class="mw-redirect" title="Roman numeral">Roman numerals</a> (without suffix, e.g. Elizabeth II not Elizabeth IInd or Elizabeth 2nd).</li></ul> <div class="mw-heading mw-heading3"><h3 id="Number_ranges" data-mw-thread-id="h-Number_ranges-Numbers">Number ranges</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=25" title="Edit section: Number ranges" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:NUMRANGE&redirect=no">MOS:NUMRANGE</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:PAGERANGE&redirect=no">MOS:PAGERANGE</a></li></ul></div></div> Like <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><a href="#Date_ranges">date ranges</a>, number ranges and page ranges should state the full value of both the beginning and end of the range, separated by an <a href="/wiki/MOS:DASH" class="mw-redirect" title="MOS:DASH">en dash</a>: pp. 1902–1911 or entries 342–349. Except within quotations, avoid abbreviated forms such as 1902–11 or 342–9, which are not understood universally, are sometimes ambiguous, and can cause inconsistent metadata to be created in citations. <div class="mw-heading mw-heading3"><h3 id="Sport_scores,_vote_tallies,_etc." data-mw-thread-id="h-Sport_scores,_vote_tallies,_etc.-Numbers">Sport scores, vote tallies, etc.</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=26" title="Edit section: Sport scores, vote tallies, etc." class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:VOTE&redirect=no">MOS:VOTE</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:SCORES&redirect=no">MOS:SCORES</a></li></ul></div></div> Sport scores, vote tallies, or other presentations that juxtapose two opposing quantities use an unspaced en dash: <ul><li>Smith beat Jones 7–3.</li> <li>Polls predicted Alice would defeat Bob 74–20 percent, with 6 percent undecided.</li></ul> To avoid potential line breaks, use <code>{{<a href="/wiki/Template:Nowrap" title="Template:Nowrap">nowrap</a>}}</code> around the entire score construction, or use <code>{{<a href="/wiki/Template:Nbnd" class="mw-redirect" title="Template:Nbnd">nbnd</a>}}</code> instead of <code>{{<a href="/wiki/Template:Ndash" class="mw-redirect" title="Template:Ndash">ndash</a>}}</code>. <div class="mw-heading mw-heading3"><h3 id="Singular_versus_plural" data-mw-thread-id="h-Singular_versus_plural-Numbers">Singular versus plural</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=27" title="Edit section: Singular versus plural" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <ul><li>Nouns following <a href="/wiki/Simple_fractions" class="mw-redirect" title="Simple fractions">simple fractions</a> are singular (took <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style>1⁄4 dose; net change was −<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄2 point; <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">3⁄2 dose).</li> <li>Nouns following <a href="/wiki/Mixed_number" class="mw-redirect" title="Mixed number">mixed numbers</a> are plural (1<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄2 doses; another 4<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">3⁄4 miles).</li> <li>Nouns following the lone, unsigned digit 1 (one) are singular, but those following other decimal numbers (i.e. base-10 numbers not involving fractions) are plural (increased 0.7 percentage points; 365.25 days; paid 5 dollars per work hour, 1 dollar per travel hour, 0 dollars per standby hour; increased by 1 point but net change +1 points; net change −1 points; net change 1.0 points).</li> <li>The same rules apply to numbers given in words (one dose; one and one-half doses; zero dollars; net change of negative one points).</li></ul> <div class="mw-heading mw-heading3"><h3 id="Fractions_and_ratios" data-mw-thread-id="h-Fractions_and_ratios-Numbers">Fractions and ratios</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=28" title="Edit section: Fractions and ratios" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:FRAC&redirect=no">MOS:FRAC</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:RATIO&redirect=no">MOS:RATIO</a></li></ul></div></div> <ul><li>Where numerator and denominator can each be expressed in one word, a fraction is usually <a href="/wiki/Fractions#Pronunciation_and_spelling" class="mw-redirect" title="Fractions">spelled out</a> (e.g. a two-thirds majority; moved one-quarter mile); use figures if a fraction appears with a symbol (e.g. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄4 mi (markup: <code>{{frac|1|4}}&nbsp;mi</code>), not a quarter of a mi or one-quarter mi). A common exception is a series of values: The distances were <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1+1⁄4, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">2⁄3 and <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄2 mile, respectively.</li> <li><a href="/wiki/Mixed_numbers" class="mw-redirect" title="Mixed numbers">Mixed numbers</a> may be given in figures or words (perhaps applying the guidance <a href="#Numbers_as_figures_or_words">above</a> to the integer part). If given in figures, they are unspaced (not Platform 9 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">3⁄4 or Platform 9-<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">3⁄4 but Platform <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">9+3⁄4 (markup: <code>{{frac|9|3|4}}</code>)). In any case the integer and fractional parts should be consistent (not Platform nine and <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">3⁄4).</li> <li>Metric (SI) measurements generally use decimals, not fractions (5.25 mm, not 5<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄4 mm).</li> <li>Non-metric (imperial and US customary) measurements may use fractions or decimals (5<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄4 inches; 5.25 inches); the practice of reliable sources should be followed, and within-article consistency is desirable.</li> <li>In science and mathematics articles, mixed numbers are rarely used (use <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠4/3⁠ the original rather than 1<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠1/3⁠ times the original voltage). The use of <code>{{<a href="/wiki/Template:Frac" class="mw-redirect" title="Template:Frac">frac</a>}}</code> <a href="/wiki/Wikipedia:Manual_of_Style/Mathematics#Fractions" title="Wikipedia:Manual of Style/Mathematics">is discouraged</a>; instead use one of these styles: <ul><li><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \textstyle {\frac {1}{2}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mstyle displaystyle="false" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> </mrow> </mstyle> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \textstyle {\frac {1}{2}}}</annotation> </semantics> </math><noscript><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1f4b147775b52f71eacf8937ff124ac92f0574d2" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.171ex; width:1.658ex; height:3.509ex;" alt="{\displaystyle \textstyle {\frac {1}{2}}}"></noscript><span class="lazy-image-placeholder" style="width: 1.658ex;height: 3.509ex;vertical-align: -1.171ex;" data-src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1f4b147775b52f71eacf8937ff124ac92f0574d2" data-alt="{\displaystyle \textstyle {\frac {1}{2}}}" data-class="mwe-math-fallback-image-inline mw-invert skin-invert">  (markup: <code><<a href="/wiki/Wikipedia:MATH" class="mw-redirect" title="Wikipedia:MATH">math</a>>\textstyle\frac{1}{2}</math></code>)</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠1/2⁠ (markup: <code>{{<a href="/wiki/Template:Sfrac" title="Template:Sfrac">sfrac</a>|1|2}}</code>)</li> <li>1/2 (markup: <code>1/2</code>)</li></ul></li> <li>Do not use <a href="/wiki/Precomposed_fraction" class="mw-redirect" title="Precomposed fraction">precomposed fraction</a> characters such as ½ (deprecated markup: &frac12; or &#189;).<a href="#cite_note-13">[k]</a> <ul><li>Except: If ¼, ½, and ¾<a href="#cite_note-14">[l]</a> are the only fractions needed, they may be used in an article, or category name, maintaining typographical consistency within an article where possible. (Examples: <a href="/wiki/Floppy_disk" title="Floppy disk">Floppy disk</a>, <a href="/wiki/Ranma_%C2%BD" title="Ranma ½">Ranma ½</a>, <a href="/wiki/Chess_notation" title="Chess notation">chess notation</a>, <a href="/wiki/Category:4_ft_6%C2%BD_in_gauge_railways" title="Category:4 ft 6½ in gauge railways">Category:4 ft 6½ in gauge railways‎</a>.)</li> <li>For other fractions, where templates cannot be used due to technical limitations, use the ASCII representation with spaces. For example, <a href="/w/index.php?title=Category:4_ft_10_7/8_in_gauge_railways&action=edit&redlink=1" class="new" title="Category:4 ft 10 7/8 in gauge railways (page does not exist)">Category:4 ft 10 7/8 in gauge railways</a>.</li></ul></li> <li>Ordinal suffixes such as -th should not be used with fractions expressed in figures (not each US state has 1/50th of the <a href="/wiki/United_States_Senate" title="United States Senate">Senate's</a> votes; 1/8th mile, but one-fiftieth of the <a href="/wiki/United_States_Senate" title="United States Senate">Senate's</a> votes; 1/8 mile; one-eighth mile).</li> <li>For dimensionless ratios (i.e. those without accompanying units), place a colon between integers, or place to between numbers-as-words: favored by a 3:1 ratio or a three-to-one ratio, not a 3/1 ratio or a 3–1 ratio. The same style is used to express <a href="/wiki/Odds" title="Odds">odds</a> in sport, gambling, and other statistical predictions. <ul><li>Use a colon (spaced) when one or more decimal points is present (a 3.5 : 1 ratio (markup: <code>a 3.5&nbsp;:&nbsp;1 ratio</code>)).</li> <li>Do not use the colon form where units are involved (dissolve using a 3 ml : 1 g ratio)‍—‌instead see ratios section of table at <a href="#Unit_names_and_symbols">§ Unit names and symbols</a>, below.</li></ul></li></ul> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Wikipedia:Manual_of_Style/Mathematics#Fractions" title="Wikipedia:Manual of Style/Mathematics">Wikipedia:Manual of Style/Mathematics § Fractions</a></div> <div class="mw-heading mw-heading3"><h3 id="Decimals" data-mw-thread-id="h-Decimals-Numbers">Decimals</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=29" title="Edit section: Decimals" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DECIMAL&redirect=no">MOS:DECIMAL</a></li></ul></div></div> <ul><li>Use a period/full point (<code>.</code>) as the <a href="/wiki/Decimal_separator" title="Decimal separator">decimal separator</a>, never a comma: 6.57, not 6,57.</li> <li>Numbers between −1 and +1 require a leading zero (0.02, not .02); exceptions are sporting performance averages (.430 <a href="/wiki/Batting_average_(baseball)" title="Batting average (baseball)">batting average</a>) and conventional terms such as .22 caliber.</li> <li>Although repeating digits may be indicated with an <a href="/wiki/Vinculum_(symbol)" title="Vinculum (symbol)">overbar</a> (e.g. <code>14.31{{overline|28}}</code> gives 14.3128), users of screen readers will not hear any indication of the overbar. Apart from in mathematics articles, consider rounding to a reasonable resolution instead (e.g. a <a href="/wiki/Half_farthing" title="Half farthing">half farthing</a> ≈£0.00052 not £0.00052083, an <a href="/wiki/Inch" title="Inch">inch</a> ≈0.333 <a href="/wiki/Palm_(unit)" title="Palm (unit)">palms</a> not 0.3 <a href="/wiki/Palm_(unit)" title="Palm (unit)">palms</a>), or showing initial repeats before the overbar (e.g. 0.333). If overbars are used, consider explaining the notation on first use. Do not write e.g. 14.31(28) because it resembles <a href="#Uncertainty">notation for uncertainty</a>.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Grouping_of_digits" data-mw-thread-id="h-Grouping_of_digits-Numbers">Grouping of digits</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=30" title="Edit section: Grouping of digits" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:DIGITS&redirect=no">MOS:DIGITS</a></li></ul></div></div> <ul><li>In general, digits should be grouped and separated either by commas or by narrow gaps (never a period/full point). <ul><li>Grouping with commas <ul><li>Left of the decimal point, five or more digits are grouped into threes separated by commas (e.g. 12,200; 255,200 km; 8,274,527th; <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄86,400).</li> <li>Numbers with exactly four digits left of the decimal point may optionally be grouped (either 1,250 or 1250), consistently within any given article.</li> <li>Do not use commas to the right of the decimal point, or with numbers not in base 10.</li> <li>Markup: <code>{{<a href="/wiki/Help:Parser_functions" class="mw-redirect" title="Help:Parser functions">formatnum:</a>}}</code> produces this formatting.</li></ul></li> <li>Grouping with narrow gaps <ul><li>Digits are grouped both sides of the decimal point (e.g. 6543210.123456; 520.01234 °C; <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠101325/760⁠).</li> <li>Digits are generally grouped into threes. Right of the decimal point, usual practice is to have a final group of four in preference to leaving an "orphaned" digit at the end (99.1234567, but 99.1234567 would also be acceptable). In mathematics-oriented articles long strings may be grouped into fives (e.g. 3.14159265358979323846...).</li> <li>This style is especially recommended for articles related to science, technology, engineering or mathematics, though in these contexts there may be cases in which grouping confuses rather than clarifies. (For example, for fractions written in horizontal format, adding spaces to a fraction like 123456/127 would cause it to be misread as 123<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠456/127⁠ or 1<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠23456/127⁠.)</li> <li>Markup: Templates <code>{{<a href="/wiki/Template:Val" title="Template:Val">val</a>}}</code> or <code>{{<a href="/wiki/Template:Gaps" title="Template:Gaps">gaps</a>}}</code> may be used to produce this formatting. Note that use of any space character as a separator in numbers, including non-breaking space, is problematic for <a href="/wiki/Screen_reader" title="Screen reader">screen readers</a>. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(See <a href="#Non-breaking_spaces">§ Non-breaking spaces</a>.) Screen readers read out each group of digits as separate numbers (e.g. <code>30{{<a href="/wiki/Template:Thin_space" title="Template:Thin space">thin space</a>}}000</code> is read as "thirty zero zero zero"). The output of <code>{{<a href="/wiki/Template:Val" title="Template:Val">val</a>}}</code> and <code>{{<a href="/wiki/Template:Gaps" title="Template:Gaps">gaps</a>}}</code> is compatible with screen readers.</li></ul></li></ul></li> <li>Delimiting style should be consistent throughout a given article. <ul><li>Either use commas or narrow gaps, but not both in the same article.</li> <li>Either group the thousands in a four-digit number or do not, but not mixed use in the same article.</li> <li>However, grouping by threes and fives may coexist.</li></ul></li> <li>Four-digit page numbers and four-digit calendar years should never be grouped (not sailed in 1,492, but dynasty collapsed around 10,400 BC or by 13727 AD, Vega will be the northern pole star).</li></ul> <div class="mw-heading mw-heading3"><h3 id="Percentages" data-mw-thread-id="h-Percentages-Numbers">Percentages</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=31" title="Edit section: Percentages" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:PERCENT&redirect=no">MOS:PERCENT</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:%25&redirect=no">MOS:%</a></li></ul></div></div> <ul><li>Throughout scientific/technical articles, and in tables and infoboxes in any article, the symbol <code>%</code> is generally preferred. Omit space (3%, not 3 %), and do not use mixed forms such as three %.</li> <li>The body<a href="#cite_note-body-8">[h]</a> of non-scientific/non-technical articles may use either the <code>%</code> symbol or the word(s) percent (American English) or per cent (British English): 10 percent; ten percent; 4.5 per cent.</li> <li>Ranges are written 10–12%, ten to twelve per cent, or ten to twelve percent; not ten–twelve per cent, 10%–12%, or 10 to 12%.</li> <li>When expressing the difference between two percentages, do not confuse a percentage change with a change in <a href="/wiki/Percentage_point" title="Percentage point">percentage points</a>.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Scientific_and_engineering_notation" data-mw-thread-id="h-Scientific_and_engineering_notation-Numbers">Scientific and engineering notation</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=32" title="Edit section: Scientific and engineering notation" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:SCIENGNOTATION&redirect=no">MOS:SCIENGNOTATION</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:10%5EX&redirect=no">MOS:10^X</a></li></ul></div></div> <ul><li><a href="/wiki/Scientific_notation" title="Scientific notation">Scientific notation</a> always has a single nonzero digit to the left of the point: not 60.22×1022, but 6.022×1023.</li> <li><a href="/wiki/Engineering_notation" title="Engineering notation">Engineering notation</a> is similar, but with the exponent adjusted to a multiple of three: 602.2×1021.</li> <li>Avoid mixing scientific and engineering notations: A 2.23×102 m2 region covered by 234.0×106 grains of sand.</li> <li>In a table column (or other presentation) in which all values can be expressed with a single power of 10, consider giving e.g. ×107 once in the column header, and omitting it in the individual entries. (Markup: <code>{{e|7}}</code>)</li> <li>In both notations, the number of digits indicates the precision. For example, 5×103 means rounded to the nearest thousand; 5.0×103 to the nearest hundred; 5.00×103 to the nearest ten; and 5.000×103 to the nearest unit.</li></ul> Markup: <code>{{<a href="/wiki/Template:Val" title="Template:Val">val</a>}}</code> and <code>{{<a href="/wiki/Template:E" class="mw-redirect" title="Template:E">e</a>}}</code> may be used to format exponential notation. <div class="mw-heading mw-heading3"><h3 id="Uncertainty_and_rounding" data-mw-thread-id="h-Uncertainty_and_rounding-Numbers">Uncertainty and rounding </h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=33" title="Edit section: Uncertainty and rounding" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:UNCERTAINTY&redirect=no">MOS:UNCERTAINTY</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:LARGENUM&redirect=no">MOS:LARGENUM</a></li></ul></div></div> <ul><li>Where explicit uncertainty information (such as a <a href="/wiki/Margin_of_error" title="Margin of error">margin of error</a>) is available and appropriate for inclusion, it may be written in various ways: <ul><li>(1.534 ± 0.035) × 1023 m</li> <li>12.34 m2 ± 5% (not used with scientific notation)</li> <li>15.34 +0.43 −0.23 × 1023 m</li> <li>1.604(48) × 10−4 J (equivalent to (1.604 ± 0.048) × 10−4 J)<a href="#cite_note-16">[m]</a></li> <li>Polls estimated Jones's share of the vote would be 55 percent, give or take about 3 percent</li> <li>Markup: <code>{{<a href="/wiki/Template:%2B-" class="mw-redirect" title="Template:+-">+-</a>}}</code>, <code>{{<a href="/wiki/Template:Su" title="Template:Su">su</a>}}</code>, and <code>{{<a href="/wiki/Template:Val" title="Template:Val">val</a>}}</code> may be used to format uncertainties.</li></ul></li> <li>Where explicit uncertainty is unavailable (or is unimportant for the article's purposes), round to an appropriate number of <a href="/wiki/Significant_digit" class="mw-redirect" title="Significant digit">significant digits</a>; the precision presented should usually be conservative. Precise values (often given in sources for formal or matter-of-record reasons) should be used only where stable and appropriate to the context, or significant in themselves for some special reason. <ul><li>The speed of light is defined to be 299,792,458 m/s</li> <li>but Particle velocities eventually reached almost two-thirds the 300-million-metre-per-second speed of light.</li> <li>checks worth $250 (equivalent to $1,800 in 2016) (not $1,845.38 in 2016)</li> <li>The city's 1920 population was 10,000 (not population was 9,996 – an official figure unlikely to be accurate at full precision)</li> <li>but The town was ineligible because its official census figure (9,996) fell short of the statutory minimum of ten thousand (unusual case in which the full-precision official figure is truly informative)</li> <li> The accident killed 337 passengers and crew, and 21 people on the ground (likely that accurate and precise figures were determined)</li> <li> At least 800 persons died in the ensuing mudslides (unlikely that any precise number can be accurate, even if an official figure is issued)</li> <li>or Officials listed 835 deaths, but the Red Cross said dozens more may have gone unreported (in reporting conflicting information, give detail sufficient to make the contrast intelligible)</li> <li>The jury's award was $8.5 million (not $8,462,247.63). The appeals court reduced this to $3,000,001 (one dollar in actual damages, the remainder in punitive damages).</li></ul></li> <li>The number of decimal places should be consistent within a list or context (The response rates were 41.0 and 47.4 percent, respectively, not 41 and 47.4 percent), unless different precisions are actually intended.</li> <li>It may sometimes be appropriate to note the lack of uncertainty information, especially where such information is normally provided and necessary for full interpretation of the figures supplied. <ul><li>A local newspaper poll predicted 52 percent of the vote would go to Smith, but did not include information on the uncertainty of this estimate</li></ul></li> <li>The <code>{{<a href="/wiki/Template:Undue_precision" title="Template:Undue precision">undue precision</a>}}</code> template may be added to figures appearing to be overprecise.</li> <li>Avoid using "approximately", "about", and similar terms with figures that have merely been approximated or rounded in a normal and expected way, unless the reader might otherwise be misled. <ul><li>The tallest player was 6 feet 3 inches (not ... about 6 feet 3 inches – heights are conventionally reported only to the nearest inch, even though greater precision may be available in principle)</li> <li>but The witness said the assailant was about 5 feet 8 inches tall ("about" because here the precise value is unknown, with substantial uncertainty)</li></ul></li> <li>The reader may be assumed to interpret large round numbers (100,000 troops) as approximations. Writing a quantity in words (one hundred thousand troops), especially if the <a href="/wiki/Indefinite_article" class="mw-redirect" title="Indefinite article">indefinite article</a> (a/an) is used instead of the word one (a hundred thousand troops), can further emphasize its approximate nature.</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">See <a href="#Unit_conversions">§ Unit conversions</a> below for precision issues when converting units.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Non–base-10_notations" data-mw-thread-id="h-Non–base-10_notations-Numbers">Non–base-10 notations</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=34" title="Edit section: Non–base-10 notations" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:BASE&redirect=no">MOS:BASE</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:RADIX&redirect=no">MOS:RADIX</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:BINARY&redirect=no">MOS:BINARY</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:HEX&redirect=no">MOS:HEX</a></li></ul></div></div> <ul><li>In computer-related articles, use the prefix <code>0x</code> for hexadecimal and <code>0b</code> for binary,<a href="#cite_note-17">[n]</a> unless there is a strong reason to use some other notation.<a href="#cite_note-18">[o]</a> Explain these prefixes in the article's introduction or on first use.</li> <li>In all other articles, use <code>{{<a href="/wiki/Template:Base" title="Template:Base">base</a>}}</code>: 1379, 2013. Markup: <code>{{base|137|9}}</code>, <code>{{base|201|3}}</code></li> <li>For <a href="/wiki/Radix" title="Radix">bases</a> above 10, use symbols conventional for that base (as seen in reliable sources) e.g. for <a href="/wiki/Base_16" class="mw-redirect" title="Base 16">base 16</a> use 0–9 and A–F.</li> <li>For octal, use 2008. Avoid using a prefix unless it is needed for computer code samples, in which case explain the prefix on first use.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Mathematical_formulae" data-mw-thread-id="h-Mathematical_formulae-Numbers">Mathematical formulae</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=35" title="Edit section: Mathematical formulae" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main page: <a href="/wiki/Wikipedia:Manual_of_Style/Mathematics" title="Wikipedia:Manual of Style/Mathematics">Wikipedia:Manual of Style/Mathematics</a></div> There are multiple ways to display mathematical formulae, covered in detail at <a href="/wiki/Wikipedia:Manual_of_Style/Mathematics#Typesetting_of_mathematical_formulae" title="Wikipedia:Manual of Style/Mathematics">Wikipedia:Manual of Style/Mathematics § Typesetting of mathematical formulae</a>. One uses special MediaWiki <code class="nowrap" style=""><math>...</math></code> markup using <a href="/wiki/LaTeX" title="LaTeX">LaTeX</a> syntax, which is capable of complex formulae; the other relies on conventionalized <a href="/wiki/HTML" title="HTML">HTML</a> formatting of simple formulae. The <code class="nowrap" style=""><math></code> markup is displayed as a <a href="/wiki/Portable_Network_Graphics" class="mw-redirect" title="Portable Network Graphics">PNG</a> image by default. Logged-in users can optionally have it rendered in <a href="/wiki/MathML" title="MathML">MathML</a>, or in HTML (via <a href="/wiki/MathJax" title="MathJax">MathJax</a>); detailed instructions are at <a href="/wiki/Help:Displaying_a_formula" title="Help:Displaying a formula">Help:Displaying a formula</a>. <a href="/wiki/Wikipedia:Manual_of_Style#Section_headings" title="Wikipedia:Manual of Style">Do not put <code class="nowrap" style=""><math></code> markup in headings</a>. </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(4)"><h2 id="Units_of_measurement" data-mw-thread-id="h-Units_of_measurement">Units of measurement</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=36" title="Edit section: Units of measurement" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-4 collapsible-block" id="mf-section-4"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:UNIT&redirect=no">MOS:UNIT</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:UNITS&redirect=no">MOS:UNITS</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:METRIC&redirect=no">MOS:METRIC</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:MEASUREMENT&redirect=no">MOS:MEASUREMENT</a></li></ul></div></div> <div class="mw-heading mw-heading3"><h3 id="Unit_choice_and_order" data-mw-thread-id="h-Unit_choice_and_order-Units_of_measurement">Unit choice and order</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=37" title="Edit section: Unit choice and order" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> Quantities are typically expressed using an appropriate "primary unit", displayed first, followed, when appropriate, by a conversion in parentheses e.g. 200 kilometres (120 mi). For details on when and how to provide a conversion, see the section <a href="#Unit_conversions">§ Unit conversions</a>. The choice of primary units depends on the circumstances, and should respect the principle of "<a href="/wiki/Wikipedia:Strong_national_ties" class="mw-redirect" title="Wikipedia:Strong national ties">strong national ties</a>", where applicable: <ul><li>In non-scientific articles with strong ties to the United States, the primary units are <a href="/wiki/United_States_customary_units" title="United States customary units">US customary</a> (pounds, <a href="/wiki/Statute_mile" class="mw-redirect" title="Statute mile">miles</a>, feet, inches, etc.)</li> <li>In non-scientific articles with strong ties to the United Kingdom, the primary units for most quantities are metric or other internationally used units,<a href="#cite_note-19">[p]</a> except that: <ul><li>UK engineering-related articles, including those on bridges and tunnels, generally use the system of units in which the subject project was <a href="/wiki/Engineering_drawing" title="Engineering drawing">drawn up</a> (but road distances are given in imperial units, with a metric conversion – see next bullet);</li> <li>the primary units for distance/length, speed and fuel consumption are <a href="/wiki/Statute_mile" class="mw-redirect" title="Statute mile">miles</a>, miles per hour, and miles per imperial gallon (except for short distances or lengths, where miles are too large for practical use);</li> <li>the primary units for personal height and weight are feet/inches and stones/pounds;</li> <li>imperial pints are used for quantities of draught beer/cider and bottled milk;</li></ul></li> <li>In all other articles, the primary units chosen will be <a href="/wiki/International_System_of_Units" title="International System of Units">SI</a> units (such as kilograms), <a href="/wiki/Non-SI_units_mentioned_in_the_SI" title="Non-SI units mentioned in the SI">non-SI units officially accepted for use with the SI</a>, or such other units as are conventional in reliable sources discussing the article topic (such as <a href="/wiki/Revolutions_per_minute" title="Revolutions per minute">revolutions per minute</a> (rpm) for <a href="/wiki/Rotational_speed" class="mw-redirect" title="Rotational speed">rotational speed</a>, <a href="/wiki/Hand_(unit)" title="Hand (unit)">hands</a> for heights of horses, <a href="/wiki/Wikipedia:WikiProject_Astronomy/Manual_of_Style#Units" class="mw-redirect" title="Wikipedia:WikiProject Astronomy/Manual of Style">mass and luminosity of the Sun</a>, etc.) <ul><li>the primary SI units for personal height and weight are centimetres and kilograms.</li></ul></li></ul> Special considerations: <ul><li>Quantities set via definition (as opposed to measured quantities) should be given first in the units used in the definition, even if this makes the structure of presentation inconsistent: During metrication, the speed limit was changed from 30 mph (48 km/h) to 50 km/h (31 mph). <ul><li>Or use about to emphasize which is the statutory, exact value: ...from 30 mph (about 48 km/h) to 50 km/h (about 31 mph).</li></ul></li> <li>Nominal quantities (e.g. 2 × 4 <a href="/wiki/Lumber#North_American_softwoods" title="Lumber">lumber</a>) require consideration of whether the article is concerned with the item's actual dimensions or merely with its function. In some cases, the nominal quantity may suffice; in others it may be necessary to give the nominal size (often in non-SI units), the actual size in non-SI units, and the actual size in SI units.</li> <li>Whenever a conversion is given, the converted quantity's value should match the precision of the source <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(see <a href="#Unit_conversions">§ Unit conversions</a>).</li> <li>Where the article's primary units differ from the units given in the source, the <code>{{<a href="/wiki/Template:Convert" title="Template:Convert">convert</a>}}</code> template's <code>|order=flip</code> flag can be used; this causes the original unit to be shown as secondary in the article, and the converted unit to be shown as primary: <code>{{convert|200|mi|km|order=flip}}</code> → The two cities are 320 kilometres (200 mi) apart.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Unit_conversions" data-mw-thread-id="h-Unit_conversions-Units_of_measurement">Unit conversions</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=38" title="Edit section: Unit conversions" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="#Currency_conversions">§ Currency conversions</a>, and <a href="/wiki/Wikipedia:WikiProject_Astronomy/Manual_of_Style#Units" class="mw-redirect" title="Wikipedia:WikiProject Astronomy/Manual of Style">Wikipedia:WikiProject Astronomy/Manual of Style § Units</a></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:CONVERSIONS&redirect=no">MOS:CONVERSIONS</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:CVT&redirect=no">MOS:CVT</a></li></ul></div></div> Where English-speaking countries use different units for the same quantity, provide a conversion in parentheses: the Mississippi River is 2,320 miles (3,734 km) long; the Murray River is 2,508 kilometres (1,558 mi) long. But in science-related articles, supplying such conversion is not required unless there is some special reason to do so. <ul><li>Where an <a href="/wiki/Imperial_unit" class="mw-redirect" title="Imperial unit">imperial unit</a> is not part of the <a href="/wiki/United_States_customary_units" title="United States customary units">US customary system</a>, or vice versa – and in particular, where those systems give a single term different definitions – a double conversion may be appropriate: Rosie weighed 80 kilograms (180 lb; 12 st 8 lb) (markup: <code>{{convert|80|kg|lb stlb}}</code>); The car had a fuel economy of 5 L/100 km (47 mpg‑US; 56 mpg‑imp) (markup: <code>{{convert|5|L/100km|mpgus mpgimp|abbr=on}}</code>).</li> <li>Generally, conversions to and from metric units and US or imperial units should be provided, except: <ul><li>When inserting a conversion would make a common or linked expression awkward (The four-minute mile).</li> <li>In some topic areas (for example, maritime subjects where nautical miles are the primary units, American football where <a href="/wiki/Yard_(unit)" class="mw-redirect" title="Yard (unit)">yards</a> are primary, and articles like <a href="/wiki/Solar_System" title="Solar System">Solar System</a> where many interplanetary distances are given) it can be excessive to provide a conversion for every quantity. In such cases consider noting that the article will use a particular unit – possibly giving the conversion factor to other, familiar units in a parenthetical note or a footnote – and link the first occurrence of each unit but not give a conversion every time it occurs. Applying this principle may require editorial discretion; for example, in scientific articles the expected level of reader sophistication should be taken into account.</li> <li>For distances on the scale of between <a href="/wiki/Star_system" title="Star system">star systems</a> and <a href="/wiki/Galaxies" class="mw-redirect" title="Galaxies">galaxies</a>, "<a href="/wiki/Light-year" title="Light-year">light-years</a>" or "ly" should be used as primary units, with a conversion to "parsecs" or "pc", but no conversion to SI units. The units should be linked on first mention. For larger quantities, use <a href="/wiki/Names_of_large_numbers" title="Names of large numbers">large number words</a> in prose (million or billion but not thousand) and metric prefixes (kly, Mly, Gly, kpc, Mpc, Gpc) in compact contexts. Examples: <ul><li>First mention in prose: 34.6 ± 2.3 million <a href="/wiki/Light-year" title="Light-year">light-years</a> (10.6 ± 0.705 <a href="/wiki/Parsec#Megaparsecs_and_gigaparsecs" title="Parsec">Mpc</a>) <ul><li>Wikitext: {{convert|34.6|±|2.3|e6ly|Mpc|sigfig=3|lk=on}}</li></ul></li> <li>Infobox or table: 2.50 <a href="/wiki/Light-year#Definitions" title="Light-year">Mly</a> (765 <a href="/wiki/Parsec#Parsecs_and_kiloparsecs" title="Parsec">kpc</a>) <ul><li>Wikitext: {{cvt|765|kpc|Mly|order=flip|sigfig=3|lk=on}} (use "order=flip" when source uses parsecs)</li></ul></li></ul></li> <li><a href="/wiki/Astronomical_unit" title="Astronomical unit">Astronomical units</a> (au) should be converted to kilometers (km) using "million", "billion", or "trillion" in both prose and compact environments like infoboxes and tables. When large interplanetary-scale distances overlap with small interstellar-scale distances, convert au to ly and pc, or ly to pc and au (depending on context). Examples: <ul><li>49.3 au (7.38 billion km) <ul><li>Wikitext: {{convert|49.3|au|e9km|abbr=unit}}</li></ul></li> <li>121,000 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a> (1.91 <a href="/wiki/Light-year" title="Light-year">light-years</a>; 0.59 <a href="/wiki/Parsec" title="Parsec">parsecs</a>) <ul><li>Wikitext: {{convert|121000|au|ly pc|abbr=off|lk=on}}</li></ul></li> <li>0.9 ly (0.28 pc; 57,000 au) <ul><li>Wikitext: {{convert|0.9|ly|pc au|abbr=unit}}</li></ul></li></ul></li></ul></li></ul> <ul><li>For units of measure that are obsolete, obscure outside of a particular specialty or geography (e.g. <a href="/wiki/Furlong" title="Furlong">furlong</a>, <a href="/wiki/Jansky" title="Jansky">jansky</a>, or <a href="/wiki/Rayleigh_(unit)" title="Rayleigh (unit)">rayleigh</a>), or not part of the SI/<a href="/wiki/Non-SI_units_mentioned_in_the_SI#Units_officially_accepted_for_use_with_the_SI" title="Non-SI units mentioned in the SI">SI-accepted</a> or US customary systems (e.g. zolotnik), supply a parenthetical conversion into at least SI or SI-accepted units (unless one of the exceptions previously noted applies). Convert each mention, unless this would be excessive given the context. Take care to distinguish between different definitions of the same unit if it has changed over time or differs geographically (e.g. <a href="/wiki/Cubit" title="Cubit">cubit</a>, <a href="/wiki/Batman_(unit)" title="Batman (unit)">batman</a>). An approximate or range conversion is acceptable if the exact historical value is uncertain (e.g. <a href="/wiki/Stadion_(unit)" title="Stadion (unit)">stadion</a>). <ul><li>Metric units not part of the SI or accepted for use with it should either be replaced with SI or SI-accepted units (e.g. joules instead of <a href="/wiki/Erg" title="Erg">ergs</a>), or they should be treated as obscure units in the same way as furlongs.</li></ul></li> <li><a href="/wiki/Metric_prefix" title="Metric prefix">Metric prefixes</a> used should be commonly known, namely "pico" thru "tera", preferably in commonly-used combinations (e.g. 2,000 kilometers not 2 megameters).</li> <li>Converted quantity values should use a level of precision similar to that of the source quantity value, so the Moon is 380,000 kilometres (240,000 mi) from Earth, not (236,121 mi). Small numbers, especially if approximate, may need to be converted to a range where rounding would cause a significant distortion, so about one mile (1–2 km), not about one mile (2 km). Be careful especially when your source has already converted from the units you're now converting back to. This may be evidenced by multiples of common conversion factors in the data, such as 160 km (from 100 miles). <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">See <a href="/wiki/False_precision" title="False precision">false precision</a>.</li> <li><code>{{<a href="/wiki/Template:Convert" title="Template:Convert">convert</a>}}</code> and other <a href="/wiki/Category:Conversion_templates" title="Category:Conversion templates">conversion templates</a> can be used to convert and format many common units, and have options to respect significant figures. To avoid problems with rounding and significant figures, for input to conversion templates use only the original quantity found in reliable sources, not one that a source has already converted. If required by the above rules, the conversion output can be displayed as the primary units with "order=flip". Conversion output can be displayed as the only units with "disp=out"; this retains the original quantity in wikitext for verification by editors.</li> <li>In a direct quotation, always retain the source units. Any conversions can be supplied either in the quote itself (in square brackets, following the original measurement) or in a footnote. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">See <a href="/wiki/Wikipedia:Footnotes" class="mw-redirect" title="Wikipedia:Footnotes">footnoting</a> and <a href="/wiki/Wikipedia:Citing_sources" title="Wikipedia:Citing sources">citing sources</a>.</li> <li><code>{{<a href="/wiki/Template:Units_attention" title="Template:Units attention">Units attention</a>}}</code> may be added to articles needing general attention regarding choice of units and unit conversions.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Unit_names_and_symbols" data-mw-thread-id="h-Unit_names_and_symbols-Units_of_measurement">Unit names and symbols</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=39" title="Edit section: Unit names and symbols" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"WP:DEGREE" redirects here. For the essay on notability, see <a href="/wiki/Wikipedia:POSITION" class="mw-redirect" title="Wikipedia:POSITION">WP:POSITION</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:UNITNAMES&redirect=no">MOS:UNITNAMES</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:UNITSYMBOLS&redirect=no">MOS:UNITSYMBOLS</a></li></ul></div></div> <dl><dd>Definitions: <ul><li>Examples of unit names: foot, metre, kilometre, (US: meter, kilometer).</li> <li>Examples of unit symbols: ft, m, km.</li></ul></dd></dl> <ul><li>Unit names and symbols should follow the practice of reliable sources.</li> <li>In prose, unit names should be given in full if used only a few times, but symbols may be used when a unit (especially one with a long name) is used repeatedly, after spelling out the first use (e.g. Up to 15 kilograms of filler is used for a batch of 250 kg). <ul><li>Exception: Certain units are generally represented by their symbols (e.g. °C rather than degrees Celsius) even on first use, though their unit names may be used for emphasis or clarity (conversion of degrees Celsius to degrees Fahrenheit).</li> <li>Exception: Consider using inches (but not in.) in place of in where the latter might be misread as a preposition‍—‌but not where the value is followed by a parenthesized conversion e.g. bolts 5 in (12.7 cm) long, or is part of such a conversion (bolts 12.7 cm (5 in) long).</li></ul></li> <li>Where space is limited, such as in tables, infoboxes, parenthetical notes, and mathematical formulas, unit symbols are preferred.</li> <li>Units unfamiliar to general readers should be presented as a name–symbol pair on first use, linking the unit name (Energies rose from 2.3 <a href="/wiki/Megaelectronvolt" class="mw-redirect" title="Megaelectronvolt">megaelectronvolts</a> (MeV) to 6 MeV). <ul><li>Commonly-known SI and SI-accepted units that can be used without linking are: meter (m), gram (g), second (s), ampere (A), liter (L), pascal (Pa), hertz (Hz), degrees Celsius (°C), minute (min), hour (h), day (d), degree (of angle, °), volt (V), watt (W)</li></ul></li> <li>Ranges use unspaced en dash (<code>{{<a href="/wiki/Template:Ndash" class="mw-redirect" title="Template:Ndash">ndash</a>}}</code>) if only one unit symbol is used at the end (e.g. 5.9–6.3 kg), and spaced en dash (<code>{{<a href="/wiki/Template:Snd" class="mw-redirect" title="Template:Snd">snd</a>}}</code>) if two symbols are used (e.g. 3 μm – 1 mm); ranges in prose may be specified using either unit symbol or unit names, and units may be stated either after both numerical values or after the last (all acceptable: from 5.9 to 6.3 kilograms; from 5.9 kilograms to 6.3 kilograms; from 5.9 to 6.3 kg; from 5.9 kg to 6.3 kg).</li> <li>Length–width, length–width–height and similar dimensions may be separated by the multiplication sign (<code>×</code> or <code>&times;</code>) or the word <code>by</code>. <ul><li>The × symbol is preceded by a space (preferably non-breaking), and followed by a space (which may also be non-breaking in short constructions), and each number should be followed by a unit name or symbol: <ul><li>1 m × 3 m × 6 m, not 1 × 3 × 6 m, (1 × 3 × 6) m, nor 1 × 3 × 6 m3 </li> <li>a metal plate 1 ft × 3 ft × 0.25 in</li> <li>a railroad easement 10 ft × 2.5 mi</li></ul></li> <li>With by, the unit need be given only once if it is the same for all dimensions: 1 by 3 by 6 metres or 1 by 3 by 6 m.</li> <li>The unspaced letter x may be used in common terms such as <a href="/wiki/4x4" class="mw-redirect" title="4x4">4x4</a>.</li></ul></li></ul> <table class="wikitable"> <caption><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">General guidelines on use of units </caption> <tbody><tr> <th class="nowrap ts-vertical-header" style=""><div style=""><style data-mw-deduplicate="TemplateStyles:r1221560606">@supports(writing-mode:vertical-rl){.mw-parser-output .ts-vertical-header{line-height:1;max-width:1em;padding:0.4em;vertical-align:bottom;width:1em}html.client-js .mw-parser-output .sortable:not(.jquery-tablesorter) .ts-vertical-header:not(.unsortable),html.client-js .mw-parser-output .ts-vertical-header.headerSort{background-position:50%.4em;padding-right:0.4em;padding-top:21px}.mw-parser-output .ts-vertical-header.is-valign-top{vertical-align:top}.mw-parser-output .ts-vertical-header.is-valign-middle{vertical-align:middle}.mw-parser-output .ts-vertical-header.is-normal{font-weight:normal}.mw-parser-output .ts-vertical-header>*{display:inline-block;transform:rotate(180deg);writing-mode:vertical-rl}@supports(writing-mode:sideways-lr){.mw-parser-output .ts-vertical-header>*{transform:none;writing-mode:sideways-lr}}}</style>Aspect</div> </th> <th>Guideline </th> <th style="width:40px;"><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png" decoding="async" width="11" height="11" class="mw-file-element" data-file-width="600" data-file-height="600"></noscript><span class="lazy-image-placeholder" style="width: 11px;height: 11px;" data-src="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/11px-Yes_check.svg.png" data-alt="" data-width="11" data-height="11" data-srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/17px-Yes_check.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/fb/Yes_check.svg/22px-Yes_check.svg.png 2x" data-class="mw-file-element">  Acceptable </th> <th style="width:40px;"><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/11px-X_mark.svg.png" decoding="async" width="11" height="13" class="mw-file-element" data-file-width="525" data-file-height="600"></noscript><span class="lazy-image-placeholder" style="width: 11px;height: 13px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/11px-X_mark.svg.png" data-alt="" data-width="11" data-height="13" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/17px-X_mark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a2/X_mark.svg/22px-X_mark.svg.png 2x" data-class="mw-file-element">  Unacceptable </th></tr> <tr> <td rowspan="8" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Unit names and symbols</div> </td> <td>Except as listed in the <a href="#Specific_units">§ Specific units</a> table below, unit symbols are uncapitalized unless they are derived from a proper name, in which case the first letter (of the base unit symbol, not of any prefix) is capitalized.<a href="#cite_note-22">[q]</a> </td> <td>8 kg 100 kPa </td> <td>8 Kg 100 kpa </td></tr> <tr> <td>Unit symbols are undotted. </td> <td>38 cm of rope </td> <td>38 cm<big>.</big> of rope </td></tr> <tr> <td rowspan="2">Unit names are given in lower case except: where any word would be capitalized, or where otherwise specified in the SI brochure<a href="#cite_note-SI_Brochure-20">[4]</a> or this Manual of Style. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>A gallon is 4 quarts.</li> <li>4 pascals</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>A Gallon is 4 Quarts.</li> <li>4 Pascals</li></ul> </div> </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>He walked several miles.</li> <li>Miles of trenches were dug.</li></ul> </div> </td> <td> </td></tr> <tr> <td>The spelling of certain unit names (some of which are listed in <a href="#Specific_units">§ Specific units</a>, below) varies with the <a href="/wiki/Wikipedia:Manual_of_Style#National_varieties_of_English" title="Wikipedia:Manual of Style">variety of English followed by the article</a>. </td> <td> </td> <td> </td></tr> <tr> <td rowspan="2">Write unit names and symbols in upright (<a href="/wiki/Roman_type" title="Roman type">roman</a>) type, except where emphasizing in context. </td> <td>10 m 29 kilograms </td> <td>10 m 29 kilograms </td></tr> <tr> <td>Thus each two-liter jug contained only two quarts. </td> <td> </td></tr> <tr> <td>Do not use precomposed unit symbol characters. </td> <td> </td> <td>㎓, ㎦, ㎍, ㎖, ㎉ </td></tr> <tr> <td rowspan="7" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Numeric values</div> </td> <td>Do not spell out numbers before unit symbols ... </td> <td>12 min </td> <td>twelve min </td></tr> <tr> <td>... but words or figures may be used with unit names. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>twelve minutes</li> <li>12 minutes</li></ul> </div> </td> <td> </td></tr> <tr> <td>Use a non-breaking space (<code>{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}</code> or <code>&nbsp;</code>) between a number and a unit symbol, or use <code>{{<a href="/wiki/Template:Nowrap" title="Template:Nowrap">nowrap</a>}}</code> ... </td> <td>29 kg (markup: <code>29&nbsp;kg</code> or <code>{{nowrap|29 kg}}</code>) </td> <td style="vertical-align: top">29kg </td></tr> <tr> <td>... though with certain symbols no space is used (see "Specific units" table below) ... </td> <td>23° 47′ 22″ </td> <td>23 ° 47 ′ 22 ″ </td></tr> <tr> <td>... and a normal space is used between a number and a unit name. </td> <td>29 kilograms (markup: <code>29 kilograms</code>) </td> <td> </td></tr> <tr> <td>To form a value and a unit name into a compound adjective use a hyphen or hyphens ... </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>a five-day holiday</li> <li>a five-cubic-foot box</li> <li>a 10-centimeter blade</li></ul> </div> </td> <td> </td></tr> <tr> <td>... but a non-breaking space (never hyphen) separates a value and unit symbol. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>a blade 10 cm long</li></ul> </div> </td> <td>a 10-cm blade </td></tr> <tr> <td rowspan="5" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Plurals</div> </td> <td><a href="/wiki/International_System_of_Units" title="International System of Units">SI</a> unit names are pluralized by adding -s or -es ... </td> <td>1 ohm; 10 ohms </td> <td> </td></tr> <tr> <td>... except for these irregular forms. </td> <td>1 henry; 10 henries 1 hertz; 10 hertz 1 lux; 10 lux 1 siemens; 10 siemens </td> <td>10 henrys 10 hertzes 10 luxes 10 siemenses </td></tr> <tr> <td rowspan="2">Some non-SI units have irregular plurals. </td> <td>1 foot; 10 feet </td> <td>10 foots </td></tr> <tr> <td>1 stratum; 10 strata (unusual) </td> <td>10 stratums </td></tr> <tr> <td>Unit symbols (in any system) are identical in singular and plural. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>grew from 1 in to 2 in </li> <li>grew from 1 inch to 2 inches </li> <li>grew from one to two inches </li></ul> </div> </td> <td>grew from 1 in to 2 ins </td></tr> <tr> <td rowspan="5" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Powers</div> </td> <td>Format exponents using , not special characters. </td> <td>km2 (markup: <code>km2</code>) </td> <td>km² (<code>km&#178;</code>) </td></tr> <tr> <td>Or use squared or cubed (after the unit being modified). </td> <td rowspan="2">ten metres per second squared </td> <td>ten metres per squared second </td></tr> <tr> <td rowspan="2">For areas or volumes only, square or cubic may be used (before the unit being modified). </td> <td>ten metres per square second </td></tr> <tr> <td>tons per square mile </td> <td> </td></tr> <tr> <td>sq or cu may be used with US customary or imperial units, but not with <a href="/wiki/International_System_of_Units" title="International System of Units">SI</a> units. </td> <td>15 sq mi 3 cu ft </td> <td>15 sq km 3 cu m </td></tr> <tr> <td rowspan="4" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Products</div> </td> <td>Indicate a product of unit names with either a hyphen or a space. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>foot-pound</li> <li>foot pound</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>footpound</li> <li>foot⋅pound</li></ul> </div> </td></tr> <tr> <td>Indicate a product of unit symbols with <code>&<a href="/wiki/Dot_operator" class="mw-redirect" title="Dot operator">sdot</a>;</code> or <code>&<a href="/wiki/Non-breaking_space" title="Non-breaking space">nbsp</a>;</code>. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>ms = millisecond</li> <li>m⋅s or m s = metre-second</li></ul> </div> </td> <td> </td></tr> <tr> <td>Exception: In some topic areas, such as power engineering, certain products take neither space nor <code>&sdot;</code>. Follow the practice of reliable sources in the article's topic area. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li><a href="/wiki/Watt_hour" class="mw-redirect" title="Watt hour">Wh</a>, <a href="/wiki/Volt_ampere" class="mw-redirect" title="Volt ampere">VA</a>, <a href="/wiki/Ampere_hour" class="mw-redirect" title="Ampere hour">Ah</a></li> <li>kWh, MVA, GAh</li></ul> </div> </td> <td> </td></tr> <tr> <td>To pluralize a product of unit names, pluralize only the final unit. (Unit symbols are never pluralized.) </td> <td>ten foot-pounds </td> <td>ten feet-pounds </td></tr> <tr> <td rowspan="7" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Ratios, rates, densities</div> </td> <td>Indicate a ratio of unit names with per. </td> <td>meter per second </td> <td>meter/second </td></tr> <tr> <td rowspan="2">Indicate a ratio of unit symbols with a forward slash (<code>/</code>), followed by either a single symbol or a parenthesized product of symbols – do not use multiple slashes. Or use −1, −2, etc. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>metre per second</li> <li>m/s</li> <li>m⋅s−1</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>mps</li></ul> </div> </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>kg/(m⋅s)</li> <li>kg⋅m−1⋅s−1</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>kg/m⋅s</li> <li>kg/m/s</li></ul> </div> </td></tr> <tr> <td>To pluralize a ratio of unit names, pluralize only the numerator unit. (Unit symbols are never pluralized.) </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>ten newton-metres per second </li> <li>10 N⋅m/s</li></ul> </div> </td> <td> </td></tr> <tr> <td>Some of the special forms used in the imperial and US customary systems are shown here ... </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>mph = miles per hour</li> <li>mpg = miles per gallon</li> <li>psi = <a href="/wiki/Pound_(force)" title="Pound (force)">pounds</a> per square inch</li></ul> </div> </td> <td> </td></tr> <tr> <td rowspan="2">... but only the slash or negative exponent notations are used with SI (and other metric) units. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>g/m2</li> <li>g⋅m−2</li></ul> </div> </td> <td>gsm </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>km/h</li> <li>km⋅h−1</li></ul> </div> </td> <td>kph </td></tr> <tr> <td rowspan="4" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Prefixes</div> </td> <td>Prefixes should not be separated by a space or hyphen. </td> <td>kilopascal </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>kilo pascal</li> <li>kilo-pascal</li></ul> </div> </td></tr> <tr> <td>Prefixes are added without contraction, except as shown here: </td> <td>kilohm megohm hectare </td> <td>kiloohm megaohm hectoare </td></tr> <tr> <td>The deci-, deca-, and hecto- prefixes should generally be avoided; exceptions include decibel, hectolitre, hectare, and hectopascal. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>100 metres</li> <li>0.1 km</li></ul> </div> </td> <td>1 hectometre </td></tr> <tr> <td>Do not use <a href="https://en.wiktionary.org/wiki/M#Number" class="extiw" title="wikt:M">M</a> for 103, MM for 106, or B for 109 (except as noted elsewhere on this page for M and B, e.g. <a href="#Currencies_and_monetary_values">for monetary values</a>) </td> <td>3 km 8 MW 125 GeV </td> <td>3 Mm 8 MMW 125 BeV </td></tr> <tr> <td rowspan="4" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Mixed units</div> </td> <td rowspan="2">Mixed units are traditionally used with the imperial and US customary systems ... </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>a wall 1 ft 1 in thick</li> <li>a wall 1 foot 1 inch thick </li> <li>a man 6 feet 2 inches tall</li> <li>a 6-foot 2-inch man</li> <li>a 6 ft 2 in man</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li> 1 ft , 1 in (no comma) </li> <li>1 foot , 1 inch</li> <li>a man 6 foot 2 tall</li> <li>a 6-foot 2 man</li> <li> </li></ul> </div> </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>1 US fl pt 8 oz</li> <li>1 US fl pt 8 US fl oz</li></ul> </div> </td> <td> </td></tr> <tr> <td>... and in expressing time durations ... </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>1:30:07</li> <li>1:30 <a href="#cite_note-23">[note 1]</a></li> <li>1 h 30 min 7 s</li> <li>01h 30m 07s <a href="#cite_note-25">[note 2]</a></li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>1:30′07″</li> <li>1:30′</li> <li>1 hr 30 min 7 sec</li> <li>1 h 30 m 7 s</li></ul> </div> </td></tr> <tr> <td>... but are not used with metric units. </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>1.33 m </li> <li>133 cm </li></ul> </div> </td> <td>1 m 33 cm </td></tr></tbody></table> Note to table: <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-23"><a href="#cite_ref-23">^</a> Use this format only where it is clear from context whether it means hours and minutes (HH:MM) or minutes and seconds (MM:SS). </li> <li id="cite_note-25"><a href="#cite_ref-25">^</a> This format is used in astronomy (see the IAU Style Manual<a href="#cite_note-24">[6]</a> for details). </li> </ol></div></div> <div class="mw-heading mw-heading3"><h3 id="Specific_units" data-mw-thread-id="h-Specific_units-Units_of_measurement">Specific units</h3> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=40" title="Edit section: Specific units" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:FOOT&redirect=no">MOS:FOOT</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:INCH&redirect=no">MOS:INCH</a></li></ul></div></div> <ul><li>The following table lists only units that need special attention.</li> <li>The SI Brochure<a href="#cite_note-SI_Brochure-20">[4]</a> should be consulted for guidance on use of other SI and non-SI units.</li></ul> <table class="wikitable"> <caption>Guidelines on specific units </caption> <tbody><tr> <th class="nowrap ts-vertical-header" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Group</div> </th> <th style="width:40px;">Unit name </th> <th style="width:40px;">Unit symbol </th> <th>Comment </th></tr> <tr> <td rowspan="8" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Length, speed</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>inch</li> <li>foot</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>in</li> <li>ft</li></ul> </div> </td> <td>Do not use <code>&prime;</code> (′), <code>&Prime;</code> (″), apostrophe ('), or quote ("). Exception: in music, <a href="/wiki/Eight-foot_pitch" title="Eight-foot pitch">eight-foot pitch</a> notation describes organ stops and wind instrument lengths in feet. A prime may be used with an explanation on first use, e.g. <style data-mw-deduplicate="TemplateStyles:r1248585704">@media screen{html.skin-theme-clientpref-night .mw-parser-output .inline-quote-talk{color:#00B785}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .inline-quote-talk{color:#00B785}}.mw-parser-output .inline-quote-talk{font-family:Georgia,"DejaVu Serif",serif;color:#008560;quotes:none}.mw-parser-output .inline-quote-talk-italic{font-family:inherit;font-style:italic}.mw-parser-output .inline-quote-talk-marks{quotes:"\"""\""}</style><q class="inline-quote-talk">a <a href="/wiki/Eight-foot_pitch" title="Eight-foot pitch">16 foot</a> (16′) organ pedal stop</q>; see <a href="/wiki/MOS:MUSIC" class="mw-redirect" title="MOS:MUSIC">MOS:MUSIC</a>. </td></tr> <tr> <td>foot per second </td> <td>ft/s (not <a href="/wiki/Frames_per_second" class="mw-redirect" title="Frames per second">fps</a>) </td> <td> </td></tr> <tr> <td><a href="/wiki/Hand_(unit)" title="Hand (unit)">hand</a> </td> <td>h or hh </td> <td>Equal to 4 inches; used in measurement of horses. A dot may be followed by additional inches e.g. 16.2 hh indicates 16 hands 2 inches. </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li><a href="/wiki/Knot_(unit)" title="Knot (unit)">knot</a></li> <li>knot <a href="/wiki/Indicated_airspeed" title="Indicated airspeed">indicated airspeed</a></li> <li>knot <a href="/wiki/Calibrated_airspeed" title="Calibrated airspeed">calibrated airspeed</a></li> <li>knot <a href="/wiki/Equivalent_airspeed" title="Equivalent airspeed">equivalent airspeed</a></li> <li>knot <a href="/wiki/True_airspeed" title="True airspeed">true airspeed</a></li> <li>knot <a href="/wiki/Groundspeed" class="mw-redirect" title="Groundspeed">groundspeed</a></li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>kn (not <a href="/wiki/Kilotonne" class="mw-redirect" title="Kilotonne">kt</a>, <a href="/wiki/Karat" class="mw-redirect" title="Karat">Kt</a>, or <a href="/wiki/Kilonewton" class="mw-redirect" title="Kilonewton">kN</a>)</li> <li>KIAS or kn</li> <li>KCAS</li> <li>KEAS</li> <li>KTAS</li> <li>kn (not KGS)</li></ul> </div> </td> <td>Used in aviation contexts for aircraft and wind speeds, and also used in some nautical and general meteorological contexts. When applied to aircraft speeds, kn means KIAS unless stated otherwise; if kn is used for calibrated airspeed, equivalent airspeed, true airspeed, or groundspeed, explicitly state and link to, upon first use, the type of speed being referred to (for instance, kn <a href="/wiki/Equivalent_airspeed" title="Equivalent airspeed">equivalent airspeed</a>, or, if severely short of space, kn <a href="/wiki/Equivalent_airspeed" title="Equivalent airspeed">EAS</a>); for airspeeds other than indicated airspeed, the use of the specific abbreviation for the type of airspeed being referred to (such as KEAS) is preferred. When referring to indicated airspeed, either kn or KIAS is permissible. Groundspeeds and wind speeds must use the abbreviation kn only. </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>metre</li> <li>meter (US)</li></ul> </div> </td> <td>m </td> <td> </td></tr> <tr> <td>micron </td> <td>μm (not μ) </td> <td>Markup: <code>&mu;m</code> Link to <a href="/wiki/Micrometre" title="Micrometre">micrometre</a> (for which micron is a synonym) on first use. </td></tr> <tr> <td><a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical unit</a> </td> <td>au (not A.U., ua) </td> <td>The preferred form is au. Articles that already use AU may switch to au or continue with AU; seek consensus on the talk page. </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>mile</li> <li>miles per hour</li> <li>nautical mile</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>mi</li> <li>mph</li> <li> nmi or NM (not <a href="/wiki/Nanometre" title="Nanometre">nm</a> or M) </li></ul> </div> </td> <td>In nautical and aeronautical contexts where there is risk of confusion with nautical miles, consider writing out references to <a href="/wiki/Statute_mile" class="mw-redirect" title="Statute mile">statute miles</a> as e.g. 5 statute miles rather than simply 5 miles. </td></tr> <tr> <td rowspan="7" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Volume, flow</div> </td> <td rowspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>cubic centimetre</li> <li> cubic centimeter (US) </li></ul> </div> </td> <td>cm3 </td> <td>Markup: <code>cm3</code> </td></tr> <tr> <td>cc </td> <td>Non-SI abbreviation used for certain <a href="/wiki/Engine_displacement" title="Engine displacement">engine displacements</a>. Link to <a href="/wiki/Cubic_centimetre" title="Cubic centimetre">Cubic centimetre</a> on first use. </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>imperial fluid ounce</li> <li>imperial pint</li> <li>imperial quart</li> <li>imperial gallon</li> <li>US fluid ounce</li> <li>US dry pint</li> <li>US liquid pint</li> <li>US dry quart</li> <li>US liquid quart</li> <li>US gallon</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>imp fl oz</li> <li>imp pt</li> <li>imp qt</li> <li>imp gal</li> <li>US fl oz</li> <li>US dry pt</li> <li>US liq pt</li> <li>US dry qt</li> <li>US liq qt</li> <li>US gal</li></ul> </div> </td> <td> <ul><li>US or imperial (or imp) must be specified for all these units.</li> <li>fluid or fl must be specified for fluid ounces (to avoid ambiguity versus <a href="/wiki/Avoirdupois_ounce" class="mw-redirect" title="Avoirdupois ounce">avoirdupois ounce</a> and <a href="/wiki/Troy_ounce" class="mw-redirect" title="Troy ounce">troy ounce</a>).</li> <li>For US pints and quarts, dry or liquid (liq) are needed to be fully unambiguous, though context determines whether or not to repeat those qualifiers on every use in a given article.</li></ul> </td></tr> <tr> <td>cubic foot </td> <td>cu ft (not cf) </td> <td>Write five million cubic feet, 5,000,000 cu ft, or 5×106 cu ft, not 5 MCF. </td></tr> <tr> <td> cubic foot per second </td> <td>cu ft/s (not cfs) </td> <td> </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>litre</li> <li>liter (US)</li></ul> </div> </td> <td>L (not l or ℓ) </td> <td>The symbol l (lowercase "el") in isolation (i.e. outside forms as ml) is easily mistaken for the digit 1 or the capital letter I ("eye") and should not be used. </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>millilitre</li> <li>milliliter (US)</li></ul> </div> </td> <td>ml or mL </td> <td>Derivative units of the litre may use l (lowercase "el"). </td></tr> <tr> <td rowspan="7" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Mass, weight, force, density, pressure</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>gram</li> <li>kilogram</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>g</li> <li>kg</li></ul> </div> </td> <td>Not gramme, kilogramme </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li><a href="/wiki/Long_ton" title="Long ton">long ton</a></li> <li><a href="/wiki/Short_ton" title="Short ton">short ton</a></li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>long ton</li> <li>short ton</li></ul> </div> </td> <td>Spell out in full. </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li><a href="/wiki/Tonne" title="Tonne">tonne</a></li> <li><a href="/wiki/Tonne" title="Tonne">metric ton</a> (US)</li></ul> </div> </td> <td>t (not mt, MT, or <a href="/wiki/Megatonne" class="mw-redirect" title="Megatonne">Mt</a>) </td> <td> </td></tr> <tr> <td> pound per square inch </td> <td>psi </td> <td> </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>troy ounce</li> <li>troy pound</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>oz t</li> <li>lb t</li></ul> </div> </td> <td rowspan="2">The qualifier t or troy must be specified where applicable. Use the qualifier avdp (<a href="/wiki/Avoirdupois" title="Avoirdupois">avoirdupois</a>) only where there is risk of confusion with troy ounce, imperial fluid ounce, US fluid ounce, or troy pound; but articles about precious metals, black powder, and gemstones should always specify which type of ounce (avoirdupois or <a href="/wiki/Troy_weight" title="Troy weight">troy</a>) is being used, noting that these materials are normally measured in troy ounces and grams. </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>avoirdupois ounce</li> <li>avoirdupois pound</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>oz or oz avdp</li> <li>lb or lb avdp</li></ul> </div> </td></tr> <tr> <td><a href="/wiki/Carat_(mass)" title="Carat (mass)">carat</a> </td> <td>carat </td> <td>Used to express masses of gemstones and pearls. </td></tr> <tr> <td class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Purity</div> </td> <td><a href="/wiki/Carat_(purity)" class="mw-redirect" title="Carat (purity)">carat or karat</a> </td> <td>k or Kt (not <a href="/wiki/Kilotonne" class="mw-redirect" title="Kilotonne">kt</a> or <a href="/wiki/Kelvin" title="Kelvin">K</a>) </td> <td>A measure of purity for gold alloys. (Do not confuse with the unit of mass with the same spelling.) </td></tr> <tr> <td rowspan="3" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Time</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>second</li> <li>minute</li> <li>hour</li></ul> </div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li>s</li> <li>min</li> <li>h</li></ul> </div> </td> <td>Do not use <code>&prime;</code> (′), <code>&Prime;</code> (″), apostrophe (') or quote (") for minutes or seconds. See also the hours–minutes–seconds formats for time durations described in the <a href="#Mixed_units">Unit names and symbols table</a>. </td></tr> <tr> <td rowspan="2">year </td> <td>a </td> <td>Use a only with an <a href="/wiki/SI_annus" class="mw-redirect" title="SI annus">SI prefix multiplier</a> (a rock formation 540 Ma old, not Life expectancy rose to 60 a). </td></tr> <tr> <td>y or yr </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">See <a href="#Long_periods_of_time">§ Long periods of time</a> for all affected units. </td></tr> <tr> <td rowspan="4" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Information, data</div> </td> <td>bit </td> <td>bit (not b or B) </td> <td rowspan="4"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">See also <a href="#Quantities_of_bytes_and_bits">§ Quantities of bytes and bits</a>, below. Do not confuse bit/second or byte/second with <a href="/wiki/Baud" title="Baud">baud (Bd)</a>. </td></tr> <tr> <td>byte </td> <td> B or byte (not b or <a href="/wiki/Octet_(computing)" title="Octet (computing)">o</a>) </td></tr> <tr> <td>bit per second </td> <td>bit/s (not bps, b/s) </td></tr> <tr> <td>byte per second </td> <td>B/s or byte/s (not Bps, bps, b/s) </td></tr> <tr> <td rowspan="4" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Angle</div> </td></tr> <tr> <td><a href="/wiki/Arcminute" class="mw-redirect" title="Arcminute">arcminute</a> </td> <td>′ </td> <td>Markup: <code>{{<a href="/wiki/Template:Prime" title="Template:Prime">prime</a>}}</code> (<a href="/wiki/Prime_(symbol)" title="Prime (symbol)">prime ′</a> not apostrophe/single quote '). No space (47′, not 47 ′). </td></tr> <tr> <td><a href="/wiki/Arcsecond" class="mw-redirect" title="Arcsecond">arcsecond</a> </td> <td>″ </td> <td>Markup: <code>{{<a href="/wiki/Template:Pprime" title="Template:Pprime">pprime</a>}}</code> (<a href="/wiki/Double_prime_(symbol)" class="mw-redirect" title="Double prime (symbol)">double prime ″</a> not double-quote "). No space (22″, not 22 ″). </td></tr> <tr> <td>degree </td> <td>° </td> <td>Markup: degree ° not <a href="/wiki/Masculine_ordinal" class="mw-redirect" title="Masculine ordinal">masculine ordinal</a> º or <a href="/wiki/Ring_(diacritic)" title="Ring (diacritic)">ring</a> ̊. No space (23°, not 23 °). </td></tr> <tr> <td rowspan="4" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Temperature</div> </td> <td>degree Fahrenheit </td> <td>°F (not F) </td> <td rowspan="3">Markup: <code>12{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}°C</code>, not <s><code>12°C</code></s> or <s><code>12°{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}C</code></s> . Do not use the <a href="/wiki/Precomposed_character" title="Precomposed character">precomposed characters</a> <style data-mw-deduplicate="TemplateStyles:r886049734">.mw-parser-output .monospaced{font-family:monospace,monospace}</style>U+2103 ℃ DEGREE CELSIUS or <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886049734">U+2109 ℉ DEGREE FAHRENHEIT. </td></tr> <tr> <td>degree <a href="/wiki/Rankine_scale" title="Rankine scale">Rankine</a> </td> <td>°R (not R) </td></tr> <tr> <td>degree Celsius (not degree centigrade) </td> <td>°C (not C) </td></tr> <tr> <td><a href="/wiki/Kelvin" title="Kelvin">kelvin</a> (not degree kelvin) </td> <td>K (not °K) </td> <td>Use a non-breaking space: <code>12{{nbsp}}K</code> (use <a href="/wiki/K" title="K">the normal Latin letter K</a>, not <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886049734">U+212A K KELVIN SIGN). When writing out the unit (not usually necessary), pluralize, e.g. 12 kelvins (see <a href="/wiki/Kelvin#Orthography" title="Kelvin">Kelvin#Orthography</a>) </td></tr> <tr> <td rowspan="2" class="nowrap ts-vertical-header is-valign-middle" style=""><div style=""><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1221560606">Energy</div> </td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li><a href="/wiki/Calorie" title="Calorie">calorie</a></li> <li>small calorie</li> <li>gram calorie</li></ul> </div> </td> <td>cal </td> <td rowspan="2">In certain subject areas, calorie is conventionally used alone; articles following this practice should specify on first use whether the use refers to the small calorie or to the kilocalorie (large calorie). Providing conversions to <a href="/wiki/International_System_of_Units" title="International System of Units">SI</a> units (usually calories to joules or kilocalories to kilojoules) may also be useful. A kilocalorie (kcal) is 1000 calories. A calorie (small calorie) is the amount of energy required to heat 1 gram of water by 1 °C. A kilocalorie is also a kilogram calorie. </td></tr> <tr> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"> <ul><li><a href="/wiki/Kilocalorie" class="mw-redirect" title="Kilocalorie">kilocalorie</a></li> <li>large calorie</li> <li>kilogram calorie</li> <li>(not Calorie – can be ambiguous)</li></ul> </div> </td> <td>kcal </td></tr></tbody></table> <div class="mw-heading mw-heading4"><h4 id="Quantities_of_bytes_and_bits" data-mw-thread-id="h-Quantities_of_bytes_and_bits-Specific_units">Quantities of bytes and bits </h4> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=41" title="Edit section: Quantities of bytes and bits" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:COMPUNITS&redirect=no">MOS:COMPUNITS</a></li></ul></div></div> In quantities of <a href="/wiki/Bit_(computing)" class="mw-redirect" title="Bit (computing)">bits</a> and <a href="/wiki/Byte" title="Byte">bytes</a>, the prefixes kilo- (symbol k or K), mega- (M), giga- (G), tera- (T), etc., are ambiguous in general usage. The meaning may be based on a decimal system (like the standard <a href="/wiki/International_System_of_Units" title="International System of Units">SI</a> prefixes), meaning 103, 106, 109, 1012, etc., or it may be based on a binary system, meaning 210, 220, 230, 240, etc. The binary meanings are more commonly used in relation to solid-state memory (such as <a href="/wiki/Random-access_memory" title="Random-access memory">RAM</a>), while the decimal meanings are more common for data transmission rates, disk storage and in theoretical calculations in modern academic textbooks. <table class="infobox noprint" style="padding: 0; text-align: left; width: 0"> <tbody><tr> <th colspan="2" class="navbox-title" style="text-align: center">Prefixes for decimal and binary multiples </th></tr> <tr> <td> <table style="border: 1px #aaa solid"> <tbody><tr> <th colspan="4" style="background: lavender; text-align: center; padding: 0 1em;"><a href="/wiki/Decimal_prefix" class="mw-redirect" title="Decimal prefix">Decimal</a> </th></tr> <tr> <th colspan="2" style="background: #eeeeff; text-align: center; padding: 0 1em;">Value </th> <th colspan="2" style="background: #eeeeff; text-align: center; padding: 0 1em;"><a href="/wiki/SI_prefix" class="mw-redirect" title="SI prefix">SI</a> </th></tr> <tr> <td>1000 </td> <td>103 </td> <td>k</td> <td><a href="/wiki/Kilo-" title="Kilo-">kilo</a> </td></tr> <tr> <td>10002 </td> <td>106 </td> <td>M</td> <td><a href="/wiki/Mega-" title="Mega-">mega</a> </td></tr> <tr> <td>10003 </td> <td>109 </td> <td>G</td> <td><a href="/wiki/Giga-" title="Giga-">giga</a> </td></tr> <tr> <td>10004 </td> <td>1012 </td> <td>T</td> <td><a href="/wiki/Tera-" class="mw-redirect" title="Tera-">tera</a> </td></tr> <tr> <td>10005 </td> <td>1015 </td> <td>P</td> <td><a href="/wiki/Peta-" class="mw-redirect" title="Peta-">peta</a> </td></tr> <tr> <td>10006 </td> <td>1018 </td> <td>E</td> <td><a href="/wiki/Exa-" class="mw-redirect" title="Exa-">exa</a> </td></tr> <tr> <td>10007 </td> <td>1021 </td> <td>Z</td> <td><a href="/wiki/Zetta-" class="mw-redirect" title="Zetta-">zetta</a> </td></tr> <tr> <td>10008 </td> <td>1024 </td> <td>Y</td> <td><a href="/wiki/Yotta-" class="mw-redirect" title="Yotta-">yotta</a> </td></tr> <tr> <td>10009 </td> <td>1027 </td> <td>R</td> <td><a href="/wiki/Ronna-" class="mw-redirect" title="Ronna-">ronna</a> </td></tr> <tr> <td>100010 </td> <td>1030 </td> <td>Q</td> <td><a href="/wiki/Quetta-" class="mw-redirect" title="Quetta-">quetta</a> </td></tr></tbody></table> </td> <td> <table style="border: 1px #aaa solid"> <tbody><tr> <th colspan="6" style="background: lavender; text-align: center; padding: 0 1em;"><a href="/wiki/Binary_prefix" title="Binary prefix">Binary</a> </th></tr> <tr> <th colspan="2" style="background: #eeeeff; text-align: center; padding: 0 1em;">Value </th> <th colspan="2" style="background: #eeeeff; text-align: center; padding: 0 1em;"><a href="/wiki/IEC_80000-13" class="mw-redirect" title="IEC 80000-13">IEC</a> </th> <th colspan="2" style="background: #eeeeff; text-align: center; padding: 0 1em;"><a href="/wiki/JEDEC_memory_standards#Unit_prefixes_for_semiconductor_storage_capacity" title="JEDEC memory standards">JEDEC</a> </th></tr> <tr> <td>1024 </td> <td>210 </td> <td>Ki</td> <td><a href="/wiki/Kibi-" class="mw-redirect" title="Kibi-">kibi</a> </td> <td>K</td> <td>kilo </td></tr> <tr> <td>10242 </td> <td>220 </td> <td>Mi</td> <td><a href="/wiki/Mebi-" class="mw-redirect" title="Mebi-">mebi</a> </td> <td>M</td> <td>mega </td></tr> <tr> <td>10243 </td> <td>230 </td> <td>Gi</td> <td><a href="/wiki/Gibi-" class="mw-redirect" title="Gibi-">gibi</a> </td> <td>G</td> <td>giga </td></tr> <tr> <td>10244 </td> <td>240 </td> <td>Ti</td> <td><a href="/wiki/Tebi-" class="mw-redirect" title="Tebi-">tebi</a> </td> <td>T</td> <td>tera </td></tr> <tr> <td>10245 </td> <td>250 </td> <td>Pi</td> <td><a href="/wiki/Pebi-" class="mw-redirect" title="Pebi-">pebi</a> </td> <td style="text-align:center">—</td> <td> </td></tr> <tr> <td>10246 </td> <td>260 </td> <td>Ei</td> <td><a href="/wiki/Exbi-" class="mw-redirect" title="Exbi-">exbi</a> </td> <td style="text-align:center">—</td> <td> </td></tr> <tr> <td>10247 </td> <td>270 </td> <td>Zi</td> <td><a href="/wiki/Zebi-" class="mw-redirect" title="Zebi-">zebi</a> </td> <td style="text-align:center">—</td> <td> </td></tr> <tr> <td>10248 </td> <td>280 </td> <td>Yi</td> <td><a href="/wiki/Yobi-" class="mw-redirect" title="Yobi-">yobi</a> </td> <td style="text-align:center">—</td> <td> </td></tr> <tr> <td colspan="6" style="text-align: center;">— </td></tr> <tr> <td colspan="6" style="text-align: center;">— </td></tr></tbody></table> </td></tr> <tr> <td colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini" style='"margin-right: 0; width: auto; float: right;"'><ul><li class="nv-view"><a href="/wiki/Template:Bit_and_byte_prefixes" title="Template:Bit and byte prefixes"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Bit_and_byte_prefixes" title="Template talk:Bit and byte prefixes"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Bit_and_byte_prefixes" title="Special:EditPage/Template:Bit and byte prefixes"><abbr title="Edit this template">e</abbr></a></li></ul></div> </td></tr></tbody></table> Follow these recommendations when using these prefixes in Wikipedia articles: <ul><li>Following the SI standard, a lower-case k should be used for "kilo-" whenever it means 1000 in computing contexts, whereas a capital K should be used instead to indicate the binary prefix for 1024 according to JEDEC. If, under the exceptions detailed further below, the article otherwise uses IEC prefixes for binary units, use Ki instead.</li> <li>Do not assume that the binary or decimal meaning of prefixes will be obvious to everyone. Explicitly specify the meaning of k and K as well as the primary meaning of M, G, T, etc. in an article (<code>{{<a href="/wiki/Template:BDprefix" title="Template:BDprefix">BDprefix</a>}}</code> is a convenient helper). Consistency within each article is desirable, but the need for consistency may be balanced with other considerations.</li> <li>The definition most relevant to the article should be chosen as primary for that article, e.g. specify a binary definition in an article on RAM, decimal definition in an article on <a href="/wiki/Hard_drives" class="mw-redirect" title="Hard drives">hard drives</a>, <a href="/wiki/Bit_rate" title="Bit rate">bit rates</a>, and a binary definition for Windows file sizes, despite files usually being stored on hard drives.</li> <li>Where consistency is not possible, specify wherever there is a deviation from the primary definition.</li> <li>Disambiguation should be shown in bytes or bits, with clear indication of whether in binary or decimal base. There is no preference in the way to indicate the number of bytes and bits, but the notation style should be consistent within an article. Acceptable examples include: <ul><li>A 64 MB (64 × 10242-byte) video card and a 100 GB (100 × 10003-byte) hard drive</li> <li>A 64 MB (64 × 220-byte) video card and a 100 GB (100 × 109-byte) hard drive</li> <li>A 64 MB (67,108,864-byte) video card and a 100 GB (100,000,000,000-byte) hard drive</li></ul></li> <li>Avoid combinations with inconsistent form such as A 64 MB (67,108,864-byte) video card and a 100 GB (100 × 10003-byte) hard drive. Footnotes, such as those seen in <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Power_Macintosh_5500&oldid=218088888">Power Macintosh 5500</a>, may be used for disambiguation.</li> <li>Unless explicitly stated otherwise, one byte is eight bits (see <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><a href="/wiki/Byte#History" title="Byte">Byte § History</a>).</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcut</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:BINPREFIX&redirect=no">MOS:BINPREFIX</a></li></ul></div></div>The <a href="/wiki/IEC_prefix" class="mw-redirect" title="IEC prefix">IEC prefixes</a> kibi- (symbol Ki), mebi- (Mi), gibi- (Gi), etc., are generally not to be used except:<a href="#cite_note-26">[r]</a> <ul><li>when the majority of cited sources on the article topic use IEC prefixes;</li> <li>in a direct quote using the IEC prefixes;</li> <li>when explicitly discussing the IEC prefixes; or</li> <li>in articles in which both types of prefix are used with neither clearly primary, or in which converting all quantities to one or the other type would be misleading or lose necessary precision, or declaring the actual meaning of a unit on each use would be impractical.</li></ul></li></ul> </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(5)"><h2 id="Currencies_and_monetary_values" data-mw-thread-id="h-Currencies_and_monetary_values">Currencies and monetary values</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=42" title="Edit section: Currencies and monetary values" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-5 collapsible-block" id="mf-section-5"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:%24&redirect=no">MOS:$</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:%C2%A3&redirect=no">MOS:£</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:%E2%82%AC&redirect=no">MOS:€</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:CURRENCY&redirect=no">MOS:CURRENCY</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:MONEY&redirect=no">MOS:MONEY</a></li></ul></div></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"WP:MONEY" and "WP:CURRENCY" redirect here. For the WikiProject focusing on articles about currencies, see <a href="/wiki/Wikipedia:WikiProject_Numismatics" title="Wikipedia:WikiProject Numismatics">Wikipedia:WikiProject Numismatics</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"WP:$" and "WP:£" redirect here. For the policy on paid editing, see <a href="/wiki/Wikipedia:Paid-contribution_disclosure" title="Wikipedia:Paid-contribution disclosure">Wikipedia:Paid-contribution disclosure</a>. For the humor page, see <a href="/wiki/Help:Buying_Wikipedia" title="Help:Buying Wikipedia">Help:Buying Wikipedia</a>.</div> Choice of currency <ul><li>In country-specific articles, such as <a href="/wiki/Economy_of_Australia" title="Economy of Australia">Economy of Australia</a>, use the currency of the subject country.</li> <li>In non-country-specific articles, such as <a href="/wiki/Wealth" title="Wealth">Wealth</a>, use US dollars (US$123 on first use, generally $123 thereafter), euros (€123), or pounds sterling (£123).</li></ul> Currency names <ul><li>Do not capitalize the names or denominations of currencies, currency subdivisions, coins and banknotes: not a Five-Dollar bill, four Quarters, and one Penny total six Dollars one Cent but a five-dollar bill, four quarters, and one penny total six dollars one cent. Exception: where otherwise required, as at the start of a sentence or in such forms as Australian dollar.</li> <li>To pluralize euro, use the standard English plurals (ten euros and fifty cents), not the <a href="/wiki/Language_and_the_euro#English" title="Language and the euro">invariant plurals used for European Union legislation and banknotes</a> (ten euro and fifty cent). For the adjectival form, use a hyphenated singular (a two-euro pen and a ten-cent coin).</li> <li>Link the first occurrence of lesser-known currencies (e.g. <a href="/wiki/Mongolian_t%C3%B6gr%C3%B6g" title="Mongolian tögrög">Mongolian tögrögs</a>).</li></ul> Currency symbols <ul><li>In general, the first mention of a particular currency should use its full, unambiguous signifier (e.g. <a href="/wiki/Australian_dollar" title="Australian dollar">A$</a>52), with subsequent references using just the appropriate symbol (e.g. $88), unless this would be unclear. Exceptions: <ul><li>In an article referring to multiple currencies represented by the same symbol (e.g. the dollars of the US, Canada, Australia, New Zealand, and other countries – <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">see <a href="/wiki/Currency_symbols#dollar_variants" class="mw-redirect" title="Currency symbols">Currency symbols § dollar variants</a>) use the full signifier (e.g. US$ or A$, but not e.g. $US123 or $123 (US)) each time, except (possibly) where a particular context makes this both unnecessary and undesirable.</li> <li>In articles entirely on US-related topics, all occurrences of the <a href="/wiki/US_dollar" class="mw-redirect" title="US dollar">US dollar</a> may be shortened ($34), unless this would be unclear.</li> <li>For currencies that use a unit named the "<a href="/wiki/Pound_(currency)" title="Pound (currency)">pound</a>": <ul><li>Use the £ symbol (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886049734">U+00A3 £ POUND SIGN) for unambiguous referrals to <a href="/wiki/Pound_sterling" title="Pound sterling">sterling</a>, the United Kingdom's currency. Avoid the <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886049734">U+20A4 ₤ LIRA SIGN.<a href="#cite_note-27">[s]</a></li> <li>GBP, sterling's ISO 4217 code, should be used to disambiguate that currency from others. Avoid using stg. or GB£.<a href="#cite_note-28">[t]</a></li> <li>For currencies other than sterling, use the symbol or abbreviation conventionally employed for that currency, if any.</li></ul></li></ul></li> <li>Link the first occurrence of lesser-known currency symbols (e.g. <a href="/wiki/Mongolian_t%C3%B6gr%C3%B6g" title="Mongolian tögrög">₮</a>)</li> <li>If there is no common English abbreviation or symbol, follow the <a href="/wiki/ISO_4217" title="ISO 4217">ISO 4217</a> standard. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">See also <a href="/wiki/List_of_circulating_currencies" title="List of circulating currencies">List of circulating currencies</a>.</li></ul> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Wikipedia:Manual_of_Style/Abbreviations#Unicode_abbreviation_ligatures" title="Wikipedia:Manual of Style/Abbreviations">Wikipedia:Manual of Style/Abbreviations § Unicode abbreviation ligatures</a></div> Currency formatting <ul><li>A point (full stop or period, <code>.</code>) – never a comma – is used as the decimal marker ($6.57, not $6,57).</li> <li>For the grouping of digits (e.g. £1,234,567) see <a href="#Grouping_of_digits">§ Grouping of digits</a>, above.</li> <li>Do not place a currency symbol after the accompanying numeric figures (e.g. 123$, 123£, 123€) unless that is the normal convention for that symbol when writing in English: smaller British coins include 1p, 2p, and 5p denominations.</li> <li>Currency abbreviations preceding a numeric value are unspaced if they consist of a nonalphabetic symbol alone (£123 or €123), or end with a nonalphabetic symbol (<a href="/wiki/Brazilian_real" title="Brazilian real">R$</a>123); but spaced (using {{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}) if completely alphabetic (<a href="/wiki/South_African_rand" title="South African rand">R</a> 123 or <a href="/wiki/Jordanian_dinar" title="Jordanian dinar">JOD</a> 123).</li> <li>Ranges should be expressed giving the currency signifier just once: $250–300, not $250–$300.</li> <li>million and billion should be spelled out on first use, and (optionally) abbreviated M or bn (both unspaced) thereafter: She received £70 million and her son £10M; the school's share was $250–300 million, and the charity's $400–450M.</li> <li>In general, a currency symbol should be accompanied by a numeric amount e.g. not He converted his US$ to A$ but He converted his US dollars to Australian dollars or He exchanged the US$100 note for Australian dollars. <ul><li>Exceptions may occur in tables and infoboxes where space is limited e.g. Currencies accepted: <a href="/wiki/United_States_dollar" title="United States dollar">US$</a>, <a href="/wiki/Swiss_franc" title="Swiss franc">SFr</a>, <a href="/wiki/Pound_sterling" title="Pound sterling">£</a>, <a href="/wiki/Euro" title="Euro">€</a>. It may be appropriate to wikilink such uses, or add an explanatory note.</li></ul></li></ul> Currency conversions <ul><li>Conversions of lesser-known currencies may be provided in terms of more familiar currencies – such as the US dollar, euro or pound sterling – using an appropriate rate (which is often not the current exchange rate). Conversions should be in parentheses after the original currency, along with the convert-to year; e.g. the grant in 2001 was 10,000,000 <a href="/wiki/Swedish_krona" title="Swedish krona">Swedish kronor</a> ($1.4M, €970,000, or £850,000 as of 2009<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Manual_of_Style/Dates_and_numbers&action=edit">[update]</a>)</li> <li>For obsolete currencies, provide an equivalent (formatted as a conversion) if possible, in the modern replacement currency (e.g. euros for amounts denominated in <a href="/wiki/French_franc" title="French franc">francs</a>), or a US-dollar equivalent where there is no modern equivalent.</li> <li>In some cases, it may be appropriate to provide a conversion accounting for inflation or deflation over time. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">See <code>{{<a href="/wiki/Template:Inflation" title="Template:Inflation">Inflation</a>}}</code> and <code>{{<a href="/wiki/Template:Inflation-fn" class="mw-redirect" title="Template:Inflation-fn">Inflation-fn</a>}}</code>.</li> <li>When converting among currencies or inflating/deflating, it is rarely appropriate to give the converted amount to more than three significant figures; typically, only two significant figures are justified: the grant in 2001 was 10,000,000 <a href="/wiki/Swedish_krona" title="Swedish krona">Swedish kronor</a> ($1.4M, €970,000, or £850,000), not ($1,390,570, €971,673 or £848,646)</li></ul> </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(6)"><h2 id="Common_mathematical_symbols" data-mw-thread-id="h-Common_mathematical_symbols">Common mathematical symbols</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=43" title="Edit section: Common mathematical symbols" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-6 collapsible-block" id="mf-section-6"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:COMMONMATH&redirect=no">WP:COMMONMATH</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:MINUS&redirect=no">MOS:MINUS</a></li></ul></div></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Wikipedia:Manual_of_Style/Mathematics" title="Wikipedia:Manual of Style/Mathematics">Wikipedia:Manual of Style/Mathematics</a>, <a href="/wiki/Wikipedia:Manual_of_Style#Common_mathematical_symbols" title="Wikipedia:Manual of Style">Wikipedia:Manual of Style § Common mathematical symbols</a>, and <a href="/wiki/Help:Displaying_a_formula" title="Help:Displaying a formula">Help:Displaying a formula</a></div> <ul><li>The Insert menu below the editing window gives a more complete list of math symbols, and allows symbols to be inserted without the HTML encoding (e.g. <code>&divide;</code>) shown here.</li> <li>Spaces are placed to left and right when a symbol is used <a href="/wiki/Binary_operation" title="Binary operation">with two operands</a> (the sum 4 + 5), but no space is used when <a href="/wiki/Unary_operation" title="Unary operation">there is one operand</a> (the value +5). Exception: spaces are usually omitted in inline fractions formed with <code>/</code>: 3/4 not 3 / 4.</li> <li>The <code>{{<a href="/wiki/Template:Mvar" title="Template:Mvar">mvar</a>}}</code> (for single-letter variables) and <code>{{<a href="/wiki/Template:Math" title="Template:Math">math</a>}}</code> (for more complicated expressions) templates are available to display mathematical formulas in a manner distinct from surrounding text.</li> <li>The <code>{{<a href="/wiki/Template:Nbsp" class="mw-redirect" title="Template:Nbsp">nbsp</a>}}</code> and <code>{{<a href="/wiki/Template:Nowrap" title="Template:Nowrap">nowrap</a>}}</code> templates may be used to prevent awkward linebreaks.</li></ul> <div style="clear:right;" class=""></div> <table class="wikitable" style="align: center; text-align: center;"> <caption>Common mathematical symbols </caption> <tbody><tr> <th width="110">Symbol name </th> <th width="80">Example </th> <th width="335">Markup </th> <th>Comments </th></tr> <tr> <td rowspan="2"><a href="/wiki/Plus_sign" class="mw-redirect" title="Plus sign">Plus / positive</a> </td> <td>x + y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' + ''y''}}</code> </td> <td rowspan="2"> </td></tr> <tr> <td>+y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|+''y''}}</code> </td></tr> <tr> <td rowspan="2"><a href="/wiki/Minus_sign" class="mw-redirect" title="Minus sign">Minus / negative</a> </td> <td>x − y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &minus; ''y''}}</code> </td> <td rowspan="2">Do not use hyphens (<code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">-</code>) or dashes (<code>{{<a href="/wiki/Template:Ndash" class="mw-redirect" title="Template:Ndash">ndash</a>}}</code> or <code>{{<a href="/wiki/Template:Mdash" class="mw-redirect" title="Template:Mdash">mdash</a>}}</code>). </td></tr> <tr> <td>−y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|&minus;''y''}}</code> </td></tr> <tr> <td rowspan="2"><a href="/wiki/Plus-minus_sign" class="mw-redirect" title="Plus-minus sign">Plus-minus / minus-plus</a> </td> <td>41.5 ± 0.3 </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">41.5 &plusmn; 0.3</code> </td> <td rowspan="2"> </td></tr> <tr> <td>−(±a) = ∓a </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|1=&minus;(&plusmn;''a'') = &#8723;''a''}}</code> </td></tr> <tr> <td><a href="/wiki/Multiplication_sign" title="Multiplication sign">Multiplication</a>, <a href="/wiki/Dot_product" title="Dot product">dot</a> </td> <td>x ⋅ y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &sdot; ''y''}}</code> </td> <td rowspan="2">Do not use the letter x to indicate multiplication. However, an unspaced x may be used as a substitute for "by" in common terms such as <a href="/wiki/4x4" class="mw-redirect" title="4x4">4x4</a>. </td></tr> <tr> <td><a href="/wiki/Multiplication_sign" title="Multiplication sign">Multiplication</a>, cross </td> <td>x × y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &times; ''y''}}</code> </td></tr> <tr> <td><a href="/wiki/Division_sign" title="Division sign">Division</a>, <a href="/wiki/Obelus" title="Obelus">obelus</a> </td> <td>x ÷ y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &divide; ''y''}}</code> </td> <td> </td></tr> <tr> <td><a href="/wiki/Equal_sign" class="mw-redirect" title="Equal sign">Equal / equals</a> </td> <td>x = y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|1=''x'' = ''y''}}</code> or <code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' {{=}} ''y''}}</code> </td> <td>Note the use of <code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">1=</code> or <code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{=}}</code> to make the template parameters work correctly </td></tr> <tr> <td><a href="/wiki/Not_equal_sign" class="mw-redirect" title="Not equal sign">Not equal</a> </td> <td>x ≠ y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &ne; ''y''}}</code> </td> <td rowspan="6"> </td></tr> <tr> <td><a href="/wiki/Approximate_sign" class="mw-redirect" title="Approximate sign">Approx. equal</a> </td> <td>π ≈ 3.14 </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''&pi;'' &asymp; 3.14}}</code> </td></tr> <tr> <td><a href="/wiki/Less_than_sign" class="mw-redirect" title="Less than sign">Less than</a> </td> <td>x < y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &lt; ''y''}}</code> </td></tr> <tr> <td><a href="/wiki/Less_than_or_equal_to" class="mw-redirect" title="Less than or equal to">Less or equal</a> </td> <td>x ≤ y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &le; ''y''}}</code> </td></tr> <tr> <td><a href="/wiki/Greater_than_sign" class="mw-redirect" title="Greater than sign">Greater than</a> </td> <td>x > y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &gt; ''y''}}</code> </td></tr> <tr> <td><a href="/wiki/Greater_than_or_equal_to" class="mw-redirect" title="Greater than or equal to">Greater or equal</a> </td> <td>x ≥ y </td> <td><code class="mw-highlight mw-highlight-lang-wikitext mw-content-ltr" dir="ltr">{{math|''x'' &ge; ''y''}}</code> </td></tr></tbody></table> </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(7)"><h2 id="Geographical_coordinates" data-mw-thread-id="h-Geographical_coordinates">Geographical coordinates</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=44" title="Edit section: Geographical coordinates" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-7 collapsible-block" id="mf-section-7"> <div style="float:right; width:100px;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1252059228"><div class="module-shortcutanchordiv"></div><div class="module-shortcutboxplain noprint" role="note"><div class="module-shortcutlist"><a href="/wiki/Wikipedia:Shortcut" title="Wikipedia:Shortcut">Shortcuts</a></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:COORDS&redirect=no">MOS:COORDS</a></li><li><a class="external text" href="https://en.wikipedia.org/w/index.php?title=MOS:COORDINATES&redirect=no">MOS:COORDINATES</a></li></ul></div></div></div> <dl><dd><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">For draft guidance on, and examples of, coordinates for linear features, see <a href="/wiki/Wikipedia:WikiProject_Geographical_coordinates/Linear" title="Wikipedia:WikiProject Geographical coordinates/Linear">Wikipedia:WikiProject Geographical coordinates/Linear</a>.</dd></dl> <dl><dd>Quick guide:</dd></dl> <div class="" style="display:table; background:#f5fffa; color: #222; margin: 1em 0; border: 1px solid #a2a9b1;"> <div style="background:#cef2e0; font-weight:bold; border-bottom: 1px solid #a2a9b1; padding: 0.2em 0.4em;"> <style data-mw-deduplicate="TemplateStyles:r1045256916">.mw-parser-output .navbar-header{text-align:center;position:relative;white-space:nowrap}.mw-parser-output .navbar-header .navbar{position:absolute;right:0;top:0;margin:0 5px}</style><div class="navbar-header">Quick how-to<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Coord_how-to" title="Template:Coord how-to"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Coord_how-to" title="Template talk:Coord how-to"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Coord_how-to" title="Special:EditPage/Template:Coord how-to"><abbr title="Edit this template">e</abbr></a></li></ul></div></div> </div> <div style="border-bottom: 1px solid #a2a9b1; padding: 0.2em 0.4em;"> To add <style data-mw-deduplicate="TemplateStyles:r1156832818">.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Wikipedia:Manual_of_Style/Dates_and_numbers&params=57_18_22_N_4_27_32_W_">57°18′22″N 4°27′32″W / 57.30611°N 4.45889°W / 57.30611; -4.45889</a> to the top of an article, use {{<a href="/wiki/Template:Coord" title="Template:Coord">Coord</a>}}, thus: <dl><dd><code>{{Coord|57|18|22|N|4|27|32|W|display=title}}</code></dd></dl> These <a href="/wiki/Geographic_coordinate_system" title="Geographic coordinate system">coordinates</a> are in <a href="/wiki/Degree_(angle)" title="Degree (angle)">degrees</a>, <a href="/wiki/Minute_and_second_of_arc" title="Minute and second of arc">minutes, and seconds of arc</a>. "title" means that the coordinates will be displayed next to the article's title at the top of the page (in desktop view only; title coordinates do not display in mobile view) and before any other text or images. It also records the coordinates as the primary location of the page's subject in Wikipedia's geosearch API. </div> <div style="border-bottom: 1px solid #a2a9b1; padding: 0.2em 0.4em;"> To add <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1156832818"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Wikipedia:Manual_of_Style/Dates_and_numbers&params=44.1124_N_87.9130_W_">44°06′45″N 87°54′47″W / 44.1124°N 87.9130°W / 44.1124; -87.9130</a> to the top of an article, use either <dl><dd><code>{{Coord|44.1124|N|87.9130|W|display=title}}</code></dd></dl> (which does not require minutes or seconds but does require the user to specify north/ south and east/west) or <dl><dd><code>{{Coord|44.1124|-87.9130|display=title}}</code></dd></dl> (in which the north and east are presumed by positive values while the south and west are negative ones). These coordinates are in <a href="/wiki/Decimal_degrees" title="Decimal degrees">decimal degrees</a>. </div> <div style="border-bottom: 1px solid #a2a9b1; padding: 0.2em 0.4em;"> <ul><li>Degrees, minutes and seconds, when used, must each be separated by a <a href="/wiki/Vertical_bar" title="Vertical bar">pipe ("|")</a>.</li> <li><a href="/wiki/Geodetic_datum" title="Geodetic datum">Map datum</a> must be <a href="/wiki/WGS84" class="mw-redirect" title="WGS84">WGS84</a> if possible (except for off-Earth bodies).</li> <li>Avoid <a href="/wiki/Wikipedia:WikiProject_Geographical_coordinates#Precision_guidelines" title="Wikipedia:WikiProject Geographical coordinates">excessive precision</a> (0.0001° is <11 m, 1″ is <31 m).</li> <li>Maintain <a href="/wiki/MOS:UNCERTAINTY" class="mw-redirect" title="MOS:UNCERTAINTY">consistency</a> of decimal places or minutes/seconds between latitude and longitude.</li> <li>Latitude (N/S) must appear before longitude (E/W).</li></ul> </div> <div style="border-bottom: 1px solid #a2a9b1; padding: 0.2em 0.4em;"> Optional coordinate parameters follow the longitude and are separated by <a href="/wiki/Underscore" title="Underscore">an underscore ("_")</a>: <ul><li><a href="/wiki/Template:Coord#dim:D" title="Template:Coord">dim</a>: <code>dim:</code>N (viewing diameter in metres)</li> <li><a href="/wiki/Template:Coord#region:R" title="Template:Coord">region</a>: <code>region:</code>R (<a href="/wiki/ISO_3166-1_alpha-2" title="ISO 3166-1 alpha-2">ISO 3166-1 alpha-2</a> or <a href="/wiki/ISO_3166-2" title="ISO 3166-2">ISO 3166-2</a> code)</li> <li><a href="/wiki/Template:Coord#type:T" title="Template:Coord">type</a>: <code>type:</code>T (<code>landmark</code> or <code>city(30,000)</code>, for example)</li></ul> Other optional parameters are separated by <a href="/wiki/Vertical_bar" title="Vertical bar">a pipe ("|")</a>: <ul><li><a href="/wiki/Template:Coord#Display" title="Template:Coord">display</a> <dl><dd><code class="tpl-para" style="word-break:break-word;">|display=inline</code> (the default) to display in the body of the article only,</dd> <dd><code class="tpl-para" style="word-break:break-word;">|display=title</code> to display at the top of the article only (in desktop view only; title coordinates do not display in mobile view), or</dd> <dd><code class="tpl-para" style="word-break:break-word;">|display=inline,title</code> to display in both places.</dd></dl></li> <li><a href="/wiki/Template:Coord#Name" title="Template:Coord">name</a> <dl><dd><code>name=</code>X to label the place on maps (default is <a href="https://www.mediawiki.org/wiki/Help:Magic_words#Page_names" class="extiw" title="mw:Help:Magic words">PAGENAME</a>)</dd></dl></li></ul> Thus: <code>{{Coord|44.1172|-87.9135|dim:30_region:US-WI_type:event</code> <dl><dd><dl><dd><code>|display=inline,title|name=accident site}}</code></dd></dl></dd></dl> Use <code class="tpl-para" style="word-break:break-word;">|display=title</code> (or <code class="tpl-para" style="word-break:break-word;">|display=inline,title</code>) once per article, for the subject of the article, where appropriate. </div> <div style="padding: 0.2em 0.4em;"> <ul><li>Per <a href="/wiki/Wikipedia:ORDER" class="mw-redirect" title="Wikipedia:ORDER">WP:ORDER</a>, the template is placed at the bottom of the article in the 'end matter', after any <a href="/wiki/Wikipedia:Navigation_template" title="Wikipedia:Navigation template">navigation templates</a>, but before all <a href="/wiki/Wikipedia:Categorization" title="Wikipedia:Categorization">categories</a>, including the {{<a href="/wiki/Template:DEFAULTSORT" title="Template:DEFAULTSORT">DEFAULTSORT</a>}} template. The {{<a href="/wiki/Template:Coord" title="Template:Coord">coord</a>}} template may also be placed within an <a href="/wiki/Help:Infobox" title="Help:Infobox">infobox</a>, instead of at the bottom of the article.</li> <li>For full details, refer to {{<a href="/wiki/Template:Coord/doc" title="Template:Coord/doc">Coord/doc</a>}}.</li> <li>Additional guidance is available at <a href="/wiki/Wikipedia:Obtaining_geographic_coordinates" title="Wikipedia:Obtaining geographic coordinates">obtaining coordinates</a> and <a href="/wiki/Geographic_coordinate_conversion" title="Geographic coordinate conversion">converting coordinates</a>.</li></ul> </div> </div> <a href="/wiki/Geographical_coordinates" class="mw-redirect" title="Geographical coordinates">Geographical coordinates</a> on Earth should be entered using a template to standardise the format and to provide a link to maps of the coordinates. As long as the templates are adhered to, a robot performs the functions automatically. First, <a href="/wiki/Wikipedia:Obtaining_geographic_coordinates" title="Wikipedia:Obtaining geographic coordinates">obtain the coordinates</a>. Avoid <a href="/wiki/Wikipedia:WikiProject_Geographical_coordinates#Precision" title="Wikipedia:WikiProject Geographical coordinates">excessive precision</a>. The <code>{{<a href="/wiki/Template:Coord" title="Template:Coord">Coord</a>}}</code> template offers users a choice of display format through <a href="/wiki/Help:User_style" title="Help:User style">user styles</a>, emits a <a href="/wiki/Geo_microformat" class="mw-redirect" title="Geo microformat">Geo microformat</a>, and is recognised (in the title position) by the "nearby" feature of Wikipedia's mobile apps and by external service providers such as Google Maps and Google Earth, and Yahoo. Infoboxes automatically emit <code>{{<a href="/wiki/Template:Coord" title="Template:Coord">Coord</a>}}</code>. The following formats are available. <ul><li>For degrees only (including decimal values): <code>{{coord|<var style="padding-right: 1px;">dd</var>|<var style="padding-right: 1px;">N/S</var>|<var style="padding-right: 1px;">dd</var>|<var style="padding-right: 1px;">E/W</var>}}</code></li> <li>For degrees/minutes: <code>{{coord|<var style="padding-right: 1px;">dd</var>|<var style="padding-right: 1px;">mm</var>|<var style="padding-right: 1px;">N/S</var>|<var style="padding-right: 1px;">dd</var>|<var style="padding-right: 1px;">mm</var>|<var style="padding-right: 1px;">E/W</var>}}</code></li> <li>For degrees/minutes/seconds: <code>{{coord|<var style="padding-right: 1px;">dd</var>|<var style="padding-right: 1px;">mm</var>|<var style="padding-right: 1px;">ss</var>|<var style="padding-right: 1px;">N/S</var>|<var style="padding-right: 1px;">dd</var>|<var style="padding-right: 1px;">mm</var>|<var style="padding-right: 1px;">ss</var>|<var style="padding-right: 1px;">E/W</var>}}</code></li></ul> where: <ul><li><var style="padding-right: 1px;">dd</var>, <var style="padding-right: 1px;">mm</var>, <var style="padding-right: 1px;">ss</var> are the degrees, minutes and seconds, respectively;</li> <li><var style="padding-right: 1px;">N/S</var> is either <kbd>N</kbd> for northern or <kbd>S</kbd> for southern <a href="/wiki/Latitude" title="Latitude">latitudes</a>;</li> <li><var style="padding-right: 1px;">E/W</var> is either <kbd>E</kbd> for eastern or <kbd>W</kbd> for western <a href="/wiki/Longitude" title="Longitude">longitudes</a>;</li> <li>negative values may be used in lieu of <kbd>S</kbd> and <kbd>W</kbd> to denote Southern and Western <a href="/wiki/Hemisphere_of_the_Earth" class="mw-redirect" title="Hemisphere of the Earth">Hemispheres</a></li></ul> For example: For the city of <a href="/wiki/Oslo" title="Oslo">Oslo</a>, located at 59° 54′ 50″ N, 10° 45′ 8″ E: <dl><dd><code>{{coord|59|54|50|N|10|45|08|E}}</code> – which becomes <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1156832818"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Wikipedia:Manual_of_Style/Dates_and_numbers&params=59_54_50_N_10_45_08_E_">59°54′50″N 10°45′08″E / 59.91389°N 10.75222°E / 59.91389; 10.75222</a></dd></dl> For a country, like <a href="/wiki/Botswana" title="Botswana">Botswana</a>, with no source on an exact geographic center, less precision is appropriate due to uncertainty: <dl><dd><code>{{coord|22|S|24|E}}</code> – which becomes <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1156832818"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Wikipedia:Manual_of_Style/Dates_and_numbers&params=22_S_24_E_">22°S 24°E / 22°S 24°E / -22; 24</a></dd></dl> Higher levels of precision are obtained by using seconds: <dl><dd><code>{{coord|33|56|24|N|118|24|00|W}}</code> – which becomes <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1156832818"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Wikipedia:Manual_of_Style/Dates_and_numbers&params=33_56_24_N_118_24_00_W_">33°56′24″N 118°24′00″W / 33.94000°N 118.40000°W / 33.94000; -118.40000</a></dd></dl> Coordinates can be entered as decimal values: <dl><dd><code>{{coord|33.94|S|118.40|W}}</code> – which becomes <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1156832818"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Wikipedia:Manual_of_Style/Dates_and_numbers&params=33.94_S_118.40_W_">33°56′S 118°24′W / 33.94°S 118.40°W / -33.94; -118.40</a></dd></dl> Increasing or decreasing the number of decimal places controls the precision. Trailing zeros may be added as needed to give both values the same appearance. <a href="/wiki/Heathrow_Airport" title="Heathrow Airport">Heathrow Airport</a>, <a href="/wiki/Amsterdam" title="Amsterdam">Amsterdam</a>, <a href="/wiki/Jan_Mayen" title="Jan Mayen">Jan Mayen</a> and <a href="/wiki/Mount_Baker" title="Mount Baker">Mount Baker</a> are examples of articles that contain geographical coordinates. Generally, the larger the object being mapped, the less precise the coordinates should be. For example, if just giving the location of a city, precision greater than degrees (°), minutes (′), seconds (″) is not needed, which suffice to locate, for example, the central administrative building. Specific buildings or other objects of similar size would justify precisions down to 10 meters or even one meter in some cases (1″ ~15 m to 30 m, 0.0001° ~5.6 m to 10 m). The final field, following the E/W, is available for attributes such as <code>type:</code>, <code>region:</code>, or <code>scale:</code> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">(the codes are documented at <a href="/wiki/Template:Coord/doc#Coordinate_parameters" title="Template:Coord/doc">Template:Coord/doc § Coordinate parameters</a>). When adding coordinates, please remove the <code>{{<a href="/wiki/Template:Coord_missing" title="Template:Coord missing">coord missing</a>}}</code> tag from the article, if present (often at the top or bottom). <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">For more information, see <a href="/wiki/Wikipedia:WikiProject_Geographical_coordinates" title="Wikipedia:WikiProject Geographical coordinates">the geographical coordinates WikiProject</a>. Templates other than <code>{{<a href="/wiki/Template:Coord" title="Template:Coord">coord</a>}}</code> should use the following variable names for coordinates: <var style="padding-right: 1px;">lat_d</var>, <var style="padding-right: 1px;">lat_m</var>, <var style="padding-right: 1px;">lat_s</var>, <var style="padding-right: 1px;">lat_NS</var>, <var style="padding-right: 1px;">long_d</var>, <var style="padding-right: 1px;">long_m</var>, <var style="padding-right: 1px;">long_s</var>, <var style="padding-right: 1px;">long_EW</var>. </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(8)"><h2 id="See_also" data-mw-thread-id="h-See_also">See also</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=45" title="Edit section: See also" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-8 collapsible-block" id="mf-section-8"> <ul><li><a href="/wiki/Wikipedia:Date_formattings" title="Wikipedia:Date formattings">Wikipedia:Date formattings</a></li> <li><a href="https://meta.wikimedia.org/wiki/Help:Date_formatting_feature" class="extiw" title="m:Help:Date formatting feature">m:Help:Date formatting feature</a> at Meta</li> <li><a href="https://meta.wikimedia.org/wiki/Help:Calculation#Displaying_numbers_and_numeric_expressions" class="extiw" title="m:Help:Calculation">m:Help:Calculation § Displaying numbers and numeric expressions</a> at Meta</li></ul> </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(9)"><h2 id="Notes" data-mw-thread-id="h-Notes">Notes</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=46" title="Edit section: Notes" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-9 collapsible-block" id="mf-section-9"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-columns references-column-width reflist-lower-alpha" style="column-width: 35em;"> <ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> See Arbitration Committee statements of principles in cases on style-related edit warring in <a href="/wiki/Wikipedia:Requests_for_arbitration/Jguk#Principles" title="Wikipedia:Requests for arbitration/Jguk">June 2005</a>, <a href="/wiki/Wikipedia:Requests_for_arbitration/jguk_2#Principles" title="Wikipedia:Requests for arbitration/jguk 2">November 2005</a>, and <a href="/wiki/Wikipedia:Requests_for_arbitration/Sortan#Principles" title="Wikipedia:Requests for arbitration/Sortan">February 2006</a>; and <a href="/wiki/Wikipedia:General_sanctions/Units_in_the_United_Kingdom" title="Wikipedia:General sanctions/Units in the United Kingdom">Wikipedia:General sanctions/Units in the United Kingdom</a>. </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> See also <a href="/wiki/Special:PermanentLink/1098278811#RfC:_Relative_time_references_-_'today'_or_not_'today'?" title="Special:PermanentLink/1098278811">this July 2022 RfC</a>. </li> <li id="cite_note-brevity-3">^ <a href="#cite_ref-brevity_3-0">a</a> <a href="#cite_ref-brevity_3-1">b</a> <a href="#cite_ref-brevity_3-2">c</a> For use in tables, infoboxes, references, etc. Only certain citation styles use abbreviated date formats. By default, Wikipedia does not abbreviate dates. <a href="/wiki/Wikipedia:Citing_sources#Citation_style" title="Wikipedia:Citing sources">Use a consistent citation style within any one article.</a> </li> <li id="cite_note-4"><a href="#cite_ref-4">^</a> All-numeric <var style="padding-right: 1px;">yyyy</var>-<var style="padding-right: 1px;">mm</var>-<var style="padding-right: 1px;">dd</var> dates might be assumed to follow the <a href="/wiki/ISO_8601" title="ISO 8601">ISO 8601</a> standard, which mandates the Gregorian calendar. Also, technically all years must have (only) four digits, but Wikipedia is unlikely to need to format a date beyond the year 9999 anytime soon. </li> <li id="cite_note-5"><a href="#cite_ref-5">^</a> The <a href="/wiki/Wikipedia:Manual_of_Style/Dates_and_numbers/Date_autoformatting" title="Wikipedia:Manual of Style/Dates and numbers/Date autoformatting">routine linking of dates</a> is deprecated. This change was made August 24, 2008, on the basis of <a href="/wiki/Wikipedia_talk:Manual_of_Style_(dates_and_numbers)/Archive_D6#Again_calling_for_date_linking_to_be_deprecated" title="Wikipedia talk:Manual of Style (dates and numbers)/Archive D6">this archived discussion</a>. It was ratified in two December 2008 RfCs: <a href="/wiki/Wikipedia:Manual_of_Style/Dates_and_numbers/Three_proposals_for_change_to_MOSNUM" title="Wikipedia:Manual of Style/Dates and numbers/Three proposals for change to MOSNUM">Wikipedia:Manual of Style/Dates and numbers/Three proposals for change to MOSNUM</a> and <a href="/wiki/Wikipedia:Manual_of_Style/Dates_and_numbers/Date_Linking_RFC" title="Wikipedia:Manual of Style/Dates and numbers/Date Linking RFC">Wikipedia:Manual of Style/Dates and numbers/Date Linking RFC</a>. </li> <li id="cite_note-6"><a href="#cite_ref-6">^</a> For consensus discussion on abbreviated date formats like "Sep 2", see <a href="/wiki/Wikipedia_talk:Manual_of_Style/Archive_151#RFC:_Month_abbreviations" title="Wikipedia talk:Manual of Style/Archive 151">Wikipedia talk:Manual of Style/Archive 151 § RFC: Month abbreviations</a> </li> <li id="cite_note-7"><a href="#cite_ref-7">^</a> These formats cannot, in general, be distinguished on sight, because there are usages in which 05-03-1991 represents March 5, and other usages in which it represents May 3. According to <a href="/wiki/Wikipedia_talk:Manual_of_Style/Dates_and_numbers/Archive_1" title="Wikipedia talk:Manual of Style/Dates and numbers/Archive 1">a prehistoric discussion of Wikipedia date formats</a>: <style data-mw-deduplicate="TemplateStyles:r1244412712">.mw-parser-output .templatequote{overflow:hidden;margin:1em 0;padding:0 32px}.mw-parser-output .templatequotecite{line-height:1.5em;text-align:left;margin-top:0}@media(min-width:500px){.mw-parser-output .templatequotecite{padding-left:1.6em}}</style><blockquote class="templatequote">Some years ago an American student I knew at university went into a panic when she received a note informing her that her exams were scheduled to start on 03-05-1991. She went into a severe weekend of cramming (studying for 18+ hours per day), until she was almost hospitalised from exhaustion. Only then did she realise that her exams didn't start on the 5th of March – two weeks from the date she got the notice – but the 3rd of May.</blockquote> In contrast, there is no common usage in which 1991-05-03 represents anything other than May 3. </li> <li id="cite_note-body-8">^ <a href="#cite_ref-body_8-0">a</a> <a href="#cite_ref-body_8-1">b</a> Body in this context means the main prose of the article, as distinguished from reference citations, tabular data, infoboxes, navigation templates, and metadata such as hatnote templates, etc. Other parts of the Manual of Style may use body to mean 'the bulk of the article after the lead section', but that is not the meaning here. Wikipedia's article leads are not written in a different prose style from the material following them. </li> <li id="cite_note-10"><a href="#cite_ref-10">^</a> The calendar practices of Oxford Dictionary of National Biography and Encyclopædia Britannica can be inferred by looking up the birth and death dates of famous, well-documented individuals. </li> <li id="cite_note-11"><a href="#cite_ref-11">^</a> A change from a preference for two digits, to a preference for four digits, on the right side of year–year ranges was implemented in July 2016 per <a href="/wiki/Special:PermanentLink/744053720#WP:DATERANGE_ambiguity_and_stylistic_concerns" title="Special:PermanentLink/744053720">this RFC</a>. </li> <li id="cite_note-13"><a href="#cite_ref-13">^</a> Some precomposed fractions may not work with screen readers, and not all fractions are available precomposed. </li> <li id="cite_note-14"><a href="#cite_ref-14">^</a> These three characters are in <a href="/wiki/ISO/IEC_8859-1" title="ISO/IEC 8859-1">ISO/IEC 8859-1</a> and work in screen readers. </li> <li id="cite_note-16"><a href="#cite_ref-16">^</a> The number in parentheses in a construction like 1.604(48) × 10−4 J is the numerical value of the standard uncertainty referred to the corresponding last digits of the quoted result.<a href="#cite_note-15">[3]</a> </li> <li id="cite_note-17"><a href="#cite_ref-17">^</a> The prefixes <code>0x</code> for hexadecimal and <code>0b</code> for binary have widespread support in systems programming languages including <a href="/wiki/C_(programming_language)" title="C (programming language)">C</a>, <a href="/wiki/C%2B%2B" title="C++">C++</a>, <a href="/wiki/Python_(programming_language)" title="Python (programming language)">Python</a>, <a href="/wiki/Rust_(programming_language)" title="Rust (programming language)">Rust</a> and <a href="/wiki/Swift_(programming_language)" title="Swift (programming language)">Swift</a>. </li> <li id="cite_note-18"><a href="#cite_ref-18">^</a> One such situation is with <a href="/wiki/Unicode" title="Unicode">Unicode</a> codepoints, which use <code>U+</code>; U+26A7, not 0x26A7. </li> <li id="cite_note-19"><a href="#cite_ref-19">^</a> If there is disagreement about the primary units used in a UK-related article, discuss the matter on the article talk-page or at <a href="/wiki/Wikipedia_talk:Manual_of_Style/Dates_and_numbers" title="Wikipedia talk:Manual of Style/Dates and numbers">Wikipedia talk:Manual of Style/Dates and numbers</a> (<a href="/wiki/Wikipedia_talk:MOSNUM" class="mw-redirect" title="Wikipedia talk:MOSNUM">WT:MOSNUM</a>). If consensus cannot be reached, refer to historically stable versions of the article and retain the units used in these as the primary units. Also note the <a href="/wiki/Metrication_in_the_UK#Newspapers" class="mw-redirect" title="Metrication in the UK">style guides</a> of British publications (e.g. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110918050646/http://www.timesonline.co.uk/tol/tools_and_services/specials/style_guide/article986731.ece">The Times</a>, under "Metric"). </li> <li id="cite_note-22"><a href="#cite_ref-22">^</a> These definitions are consistent with all units of measure mentioned in the SI Brochure<a href="#cite_note-SI_Brochure-20">[4]</a> and with all units of measure catalogued in <a href="/wiki/European_units_of_measurement_directives" title="European units of measurement directives">EU directive 80/181/EEC</a>.<a href="#cite_note-21">[5]</a> </li> <li id="cite_note-26"><a href="#cite_ref-26">^</a> Wikipedia follows common practice regarding <a href="/wiki/Byte" title="Byte">bytes</a> and other data traditionally quantified using <a href="/wiki/Binary_prefix" title="Binary prefix">binary prefixes</a> (e.g. mega- and kilo-, meaning 220 and 210 respectively) and their unit symbols (e.g. MB and KB) for RAM and <a href="/wiki/Decimal_prefix" class="mw-redirect" title="Decimal prefix">decimal prefixes</a> for most other uses. Despite the IEC's 1998 international standard creating several new binary prefixes (e.g. mebi-, kibi-, etc.) to distinguish the meaning of the decimal <a href="/wiki/SI_prefix" class="mw-redirect" title="SI prefix">SI prefixes</a> (e.g. mega- and kilo-, meaning 106 and 103 respectively) from the binary ones, and the subsequent incorporation of these IEC prefixes into the <a href="/wiki/ISO/IEC_80000" title="ISO/IEC 80000">IEC 80000-13</a>, consensus on Wikipedia in computing-related contexts favours the retention of the more familiar but ambiguous units KB, MB, GB, TB, PB, EB, etc. over use of unambiguous IEC binary prefixes. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1033199720"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951">For detailed discussion, see <a href="/wiki/Wikipedia_talk:Manual_of_Style_(dates_and_numbers)/Archive/Complete_rewrite_of_Units_of_Measurements_(June_2008)" class="mw-redirect" title="Wikipedia talk:Manual of Style (dates and numbers)/Archive/Complete rewrite of Units of Measurements (June 2008)">WT:Manual of Style (dates and numbers)/Archive/Complete rewrite of Units of Measurements (June 2008)</a>. </li> <li id="cite_note-27"><a href="#cite_ref-27">^</a> Whether 00A3 is displayed with one or two bars is typeface (font) dependent. </li> <li id="cite_note-28"><a href="#cite_ref-28">^</a> See also <a href="/wiki/Special:Diff/1141132558" title="Special:Diff/1141132558">this February 2023 RfC</a>. </li> </ol></div> </section><div class="mw-heading mw-heading2 ext-discussiontools-init-section section-heading" onclick="mfTempOpenSection(10)"><h2 id="References" data-mw-thread-id="h-References">References</h2> <a role="button" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=edit&section=47" title="Edit section: References" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-10 collapsible-block" id="mf-section-10"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-columns references-column-width" style="column-width: 35em;"> <ol class="references"> <li id="cite_note-9"><a href="#cite_ref-9">^</a> <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFGarratyCarnes1999" class="citation encyclopaedia cs1">Garraty, John A.; Carnes, Mark C., eds. (1999). "Editorial note". American National Biography. Oxford University Press. pp. xxi–xxii.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Editorial+note&rft.btitle=American+National+Biography&rft.pages=xxi-xxii&rft.pub=Oxford+University+Press&rft.date=1999&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWikipedia%3AManual+of+Style%2FDates+and+numbers" class="Z3988"> </li> <li id="cite_note-12"><a href="#cite_ref-12">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://www.bipm.org/documents/20126/28435864/working-document-ID-3644/2a6ce17c-7b50-4164-9bee-64f77bfad895">Coordinated Universal Time (UTC)</a> (PDF). <a href="/wiki/Bureau_International_des_Poids_et_Mesures" class="mw-redirect" title="Bureau International des Poids et Mesures">Bureau International des Poids et Mesures</a>. June 2, 2009. p. 3. CCTF/09-32. Retrieved October 5, 2022. <q>This coordination began on January 1, 1960, and the resulting time scale began to be called informally 'Coordinated Universal Time.' </q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Coordinated+Universal+Time+%28UTC%29&rft.pages=3&rft.pub=Bureau+International+des+Poids+et+Mesures&rft.date=2009-06-02&rft_id=https%3A%2F%2Fwww.bipm.org%2Fdocuments%2F20126%2F28435864%2Fworking-document-ID-3644%2F2a6ce17c-7b50-4164-9bee-64f77bfad895&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWikipedia%3AManual+of+Style%2FDates+and+numbers" class="Z3988"> </li> <li id="cite_note-15"><a href="#cite_ref-15">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.physics.nist.gov/cgi-bin/cuu/Info/Constants/definitions.html">"Fundamental Physical Constants: Standard Uncertainty and Relative Standard Uncertainty"</a>. The NIST Reference on Constants, Units, and Uncertainty. US <a href="/wiki/National_Institute_of_Standards_and_Technology" title="National Institute of Standards and Technology">National Institute of Standards and Technology</a>. June 25, 2015. Retrieved December 12, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+NIST+Reference+on+Constants%2C+Units%2C+and+Uncertainty&rft.atitle=Fundamental+Physical+Constants%3A+Standard+Uncertainty+and+Relative+Standard+Uncertainty&rft.date=2015-06-25&rft_id=http%3A%2F%2Fwww.physics.nist.gov%2Fcgi-bin%2Fcuu%2FInfo%2FConstants%2Fdefinitions.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWikipedia%3AManual+of+Style%2FDates+and+numbers" class="Z3988"> </li> <li id="cite_note-SI_Brochure-20">^ <a href="#cite_ref-SI_Brochure_20-0">a</a> <a href="#cite_ref-SI_Brochure_20-1">b</a> <a href="#cite_ref-SI_Brochure_20-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1">"Chapter 4: Non-SI units that are accepted for use with the SI". <a rel="nofollow" class="external text" href="https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9-EN.pdf">SI Brochure: The International System of Units (SI)</a> (PDF) (9th ed.). <a href="/wiki/Bureau_International_des_Poids_et_Mesures" class="mw-redirect" title="Bureau International des Poids et Mesures">Bureau International des Poids et Mesures</a>. 2019. Retrieved 2020-09-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Chapter+4%3A+Non-SI+units+that+are+accepted+for+use+with+the+SI&rft.btitle=SI+Brochure%3A+The+International+System+of+Units+%28SI%29&rft.edition=9th&rft.pub=Bureau+International+des+Poids+et+Mesures&rft.date=2019&rft_id=https%3A%2F%2Fwww.bipm.org%2Futils%2Fcommon%2Fpdf%2Fsi-brochure%2FSI-Brochure-9-EN.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWikipedia%3AManual+of+Style%2FDates+and+numbers" class="Z3988"> Table 8, p 145, gives additional guidance on non-SI units. </li> <li id="cite_note-21"><a href="#cite_ref-21">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://eur-lex.europa.eu/legal-content/EN/TXT/?qid=1397640809938&uri=CELEX:01980L0181-20090527">"Council Directive of 20 December 1979 on the approximation of the laws of the Member States relating to units of measurement"</a>. Eur-Lex.Europa.eu. <a href="/wiki/European_Union" title="European Union">European Union</a>. 2017 [1979]. 80/181/EEC (Document 01980L0181-20090527). Retrieved December 12, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Eur-Lex.Europa.eu&rft.atitle=Council+Directive+of+20+December+1979+on+the+approximation+of+the+laws+of+the+Member+States+relating+to+units+of+measurement&rft.date=2017&rft_id=http%3A%2F%2Feur-lex.europa.eu%2Flegal-content%2FEN%2FTXT%2F%3Fqid%3D1397640809938%26uri%3DCELEX%3A01980L0181-20090527&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWikipedia%3AManual+of+Style%2FDates+and+numbers" class="Z3988"> </li> <li id="cite_note-24"><a href="#cite_ref-24">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWilkins1989" class="citation book cs1">Wilkins, G. A. (1989). "5.14 Time and angle". <a rel="nofollow" class="external text" href="https://www.iau.org/static/publications/stylemanual1989.pdf">IAU Style Manual</a> (PDF). <a href="/wiki/International_Astronomical_Union" title="International Astronomical Union">International Astronomical Union</a>. p. S23. Retrieved 12 December 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=5.14+Time+and+angle&rft.btitle=IAU+Style+Manual&rft.pages=S23&rft.pub=International+Astronomical+Union&rft.date=1989&rft.aulast=Wilkins&rft.aufirst=G.+A.&rft_id=https%3A%2F%2Fwww.iau.org%2Fstatic%2Fpublications%2Fstylemanual1989.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AWikipedia%3AManual+of+Style%2FDates+and+numbers" class="Z3988"> </li> </ol></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output 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style="text-align: center;"><div> <ul><li><a href="/wiki/Wikipedia:Simplified_Manual_of_Style" title="Wikipedia:Simplified Manual of Style">Overview</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Contents" title="Wikipedia:Manual of Style/Contents">Contents</a></li> <li><a href="/wiki/Wikipedia:Styletips" title="Wikipedia:Styletips">Tips</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(content)" title="Category:Wikipedia Manual of Style (content)">Content</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Accessibility" title="Wikipedia:Manual of Style/Accessibility">Accessibility</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Biography" title="Wikipedia:Manual of Style/Biography">Biography</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Disambiguation_pages" title="Wikipedia:Manual of Style/Disambiguation pages">Disambiguation pages</a> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Organizing_disambiguation_pages_by_subject_area" title="Wikipedia:Manual of Style/Organizing disambiguation pages by subject area">Organizing by subject area</a></li></ul></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Gender_identity" title="Wikipedia:Manual of Style/Gender identity">Gender identity</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Hidden_text" title="Wikipedia:Manual of Style/Hidden text">Hidden text</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Infoboxes" title="Wikipedia:Manual of Style/Infoboxes">Infoboxes</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Linking" title="Wikipedia:Manual of Style/Linking">Linking</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Self-references_to_avoid" title="Wikipedia:Manual of Style/Self-references to avoid">Self-references</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Words_to_watch" title="Wikipedia:Manual of Style/Words to watch">Words to watch</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(formatting)" title="Category:Wikipedia Manual of Style (formatting)">Formatting</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Abbreviations" title="Wikipedia:Manual of Style/Abbreviations">Abbreviations</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Capital_letters" title="Wikipedia:Manual of Style/Capital letters">Capitalization</a></li> <li><a class="mw-selflink selflink">Dates and numbers</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Pronunciation" title="Wikipedia:Manual of Style/Pronunciation">Pronunciation</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Spelling" title="Wikipedia:Manual of Style/Spelling">Spelling</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Text_formatting" title="Wikipedia:Manual of Style/Text formatting">Text formatting</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Titles_of_works" title="Wikipedia:Manual of Style/Titles of works">Titles of works</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(images)" title="Category:Wikipedia Manual of Style (images)">Images</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Captions" title="Wikipedia:Manual of Style/Captions">Captions</a></li> <li><a href="/wiki/Wikipedia:Image_use_policy#Adding_images_to_articles" title="Wikipedia:Image use policy">Image placement</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Icons" title="Wikipedia:Manual of Style/Icons">Icons</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Images" title="Wikipedia:Manual of Style/Images">Images</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(layout)" title="Category:Wikipedia Manual of Style (layout)">Layout</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Layout" title="Wikipedia:Manual of Style/Layout">Layout</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Lead_section" title="Wikipedia:Manual of Style/Lead section">Lead section</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Tables" title="Wikipedia:Manual of Style/Tables">Tables</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Trivia_sections" title="Wikipedia:Manual of Style/Trivia sections">Trivia sections</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(lists)" title="Category:Wikipedia Manual of Style (lists)">Lists</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Lists" title="Wikipedia:Manual of Style/Lists">Lists</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Lists_of_works" title="Wikipedia:Manual of Style/Lists of works">Lists of works</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Road_junction_lists" title="Wikipedia:Manual of Style/Road junction lists">Road junctions</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Stand-alone_lists" class="mw-redirect" title="Wikipedia:Manual of Style/Stand-alone lists">Stand-alone lists</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">By topic area</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(legal)" title="Category:Wikipedia Manual of Style (legal)">Legal</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Legal" title="Wikipedia:Manual of Style/Legal">Legal</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Trademarks" title="Wikipedia:Manual of Style/Trademarks">Trademarks</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(arts)" title="Category:Wikipedia Manual of Style (arts)">Arts</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Anime_and_manga" title="Wikipedia:Manual of Style/Anime and manga">Anime and manga</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Comics" title="Wikipedia:Manual of Style/Comics">Comics</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Film" title="Wikipedia:Manual of Style/Film">Film</a></li> <li><a href="/wiki/Wikipedia:Lyrics_and_poetry" title="Wikipedia:Lyrics and poetry">Lyrics and poetry</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Novels" title="Wikipedia:Manual of Style/Novels">Novels</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Television" title="Wikipedia:Manual of Style/Television">Television</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Video_games" title="Wikipedia:Manual of Style/Video games">Video games</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Visual_arts" title="Wikipedia:Manual of Style/Visual arts">Visual arts</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Writing_about_fiction" title="Wikipedia:Manual of Style/Writing about fiction">Writing about fiction</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(music)" title="Category:Wikipedia Manual of Style (music)">Music</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Music" title="Wikipedia:Manual of Style/Music">Music</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Music_samples" title="Wikipedia:Manual of Style/Music samples">Music samples</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Record_charts" title="Wikipedia:Manual of Style/Record charts">Record charts</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Stringed_instrument_tunings" title="Wikipedia:Manual of Style/Stringed instrument tunings">Stringed instruments</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(history)" title="Category:Wikipedia Manual of Style (history)">History</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Blazon" title="Wikipedia:Manual of Style/Blazon">Blazons</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Military_history" title="Wikipedia:Manual of Style/Military history">Military history</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(regional)" title="Category:Wikipedia Manual of Style (regional)">Regional</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Naming_conventions_(geographic_names)#Specific_topics" title="Wikipedia:Naming conventions (geographic names)">Specific naming conventions</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Canada-related_articles" title="Wikipedia:Manual of Style/Canada-related articles">Canada</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/China-_and_Chinese-related_articles" title="Wikipedia:Manual of Style/China- and Chinese-related articles">China (and Chinese)</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/France-_and_French-related_articles" title="Wikipedia:Manual of Style/France- and French-related articles">France (and French)</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Egypt-related_articles" title="Wikipedia:Manual of Style/Egypt-related articles">Egypt</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Hawaii-related_articles" title="Wikipedia:Manual of Style/Hawaii-related articles">Hawaii</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/India-related_articles" title="Wikipedia:Manual of Style/India-related articles">India</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Indonesia-related_articles" title="Wikipedia:Manual of Style/Indonesia-related articles">Indonesia</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Ireland-related_articles" title="Wikipedia:Manual of Style/Ireland-related articles">Ireland</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Japan-related_articles" title="Wikipedia:Manual of Style/Japan-related articles">Japan</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Korea-related_articles" title="Wikipedia:Manual of Style/Korea-related articles">Korea</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Malaysia-related_articles" title="Wikipedia:Manual of Style/Malaysia-related articles">Malaysia</a></li> <li><a href="/wiki/Wikipedia:Naming_conventions_(Macedonia)" title="Wikipedia:Naming conventions (Macedonia)">Macedonia</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Pakistan-related_articles" title="Wikipedia:Manual of Style/Pakistan-related articles">Pakistan</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Philippines-related_articles" title="Wikipedia:Manual of Style/Philippines-related articles">Philippines</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Poland-related_articles" title="Wikipedia:Manual of Style/Poland-related articles">Poland</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Singapore-related_articles" title="Wikipedia:Manual of Style/Singapore-related articles">Singapore</a></li> <li><a href="/wiki/Wikipedia:WikiProject_Trinidad_and_Tobago/Style_guide" title="Wikipedia:WikiProject Trinidad and Tobago/Style guide">Trinidad and Tobago</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(religion)" title="Category:Wikipedia Manual of Style (religion)">Religion</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Islam-related_articles" title="Wikipedia:Manual of Style/Islam-related articles">Islam</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Latter_Day_Saints" title="Wikipedia:Manual of Style/Latter Day Saints">Latter Day Saints</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(science)" title="Category:Wikipedia Manual of Style (science)">Science</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Mathematics" title="Wikipedia:Manual of Style/Mathematics">Mathematics</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Medicine-related_articles" title="Wikipedia:Manual of Style/Medicine-related articles">Medicine</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry" title="Wikipedia:Manual of Style/Chemistry">Chemistry</a> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/Compound_classes" title="Wikipedia:Manual of Style/Chemistry/Compound classes">Compound classes</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/Chemicals" title="Wikipedia:Manual of Style/Chemistry/Chemicals">Chemicals</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/References_and_external_links" title="Wikipedia:Manual of Style/Chemistry/References and external links">References and external links</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/Safety" title="Wikipedia:Manual of Style/Chemistry/Safety">Safety</a></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Chemistry/Structure_drawing" title="Wikipedia:Manual of Style/Chemistry/Structure drawing">Structure drawing</a></li></ul></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Computer_science" title="Wikipedia:Manual of Style/Computer science">Computer science</a></li> <li><a href="/wiki/Template:Taxobox/doc" title="Template:Taxobox/doc">Taxonomy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(sports)" title="Category:Wikipedia Manual of Style (sports)">Sports</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Cue_sports" title="Wikipedia:Manual of Style/Cue sports">Cue sports</a> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Snooker" title="Wikipedia:Manual of Style/Snooker">Snooker</a></li></ul></li> <li><a href="/wiki/Wikipedia:Manual_of_Style/Figure_skating" title="Wikipedia:Manual of Style/Figure skating">Figure skating</a> <ul><li><a href="/wiki/Wikipedia:Manual_of_Style/Figure_skating_terminology" title="Wikipedia:Manual of Style/Figure skating terminology">Terminology</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Category:Wikipedia_Manual_of_Style_(related_guidelines)" title="Category:Wikipedia Manual of Style (related guidelines)">Related guidelines</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Wikipedia:Article_size" title="Wikipedia:Article size">Article size</a></li> <li><a href="/wiki/Wikipedia:Article_titles" title="Wikipedia:Article titles">Article titles</a></li> <li><a href="/wiki/Wikipedia:Categories,_lists,_and_navigation_templates" title="Wikipedia:Categories, lists, and navigation templates">Categories, lists, and navigation templates</a></li> <li><a href="/wiki/Wikipedia:Categorization" title="Wikipedia:Categorization">Categorization</a></li> <li><a href="/wiki/Wikipedia:Hatnote" title="Wikipedia:Hatnote">Hatnotes</a></li> <li><a href="/wiki/Wikipedia:Subpages" title="Wikipedia:Subpages">Subpages</a></li> <li><a href="/wiki/Wikipedia:Make_technical_articles_understandable" title="Wikipedia:Make technical articles understandable">Understandability</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Search</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><div class="mw-inputbox-centered" style=""><form name="searchbox" class="searchbox mw-inputbox-form-inline" action="/wiki/Special:Search" id="style-wide-searchbox"><div class="cdx-text-input"><input class="mw-searchInput searchboxInput cdx-text-input__input" name="search" placeholder="e.g. image placement" size="25" dir="ltr"></div><input type="hidden" value="Wikipedia:Manual of Style" name="prefix"> <input type="submit" name="fulltext" value="Search the MoS" class="cdx-button"><input type="hidden" value="Search" name="fulltext"></form></div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div> <ul><li><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" data-file-width="180" data-file-height="185"></noscript><span class="lazy-image-placeholder" style="width: 16px;height: 16px;" data-src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" data-alt="" data-width="16" data-height="16" data-srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-class="mw-file-element">  <a href="/wiki/Category:Wikipedia_Manual_of_Style" title="Category:Wikipedia Manual of Style">Category</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Math_templates" style="padding:3px"><table class="nowraplinks hlist mw-collapsible expanded navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Math_templates" title="Template:Math templates"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Math_templates" title="Template talk:Math templates"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Math_templates" title="Special:EditPage/Template:Math templates"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Math_templates" style="font-size:114%;margin:0 4em">Math templates</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="*Functions_*Numeral_systems" style="font-size:114%;margin:0 4em"> <ul><li>Functions</li> <li>Numeral systems</li></ul> </div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;font-size:110%;"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Functions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Template:Elementary_arithmetic" title="Template:Elementary arithmetic">elementary arithmetic</a></li> <li><a href="/wiki/Template:Precision" title="Template:Precision">precision</a></li> <li><a href="/wiki/Template:Val" title="Template:Val">val</a> (value formatting)</li> <li><a href="/wiki/Template:Percentage" title="Template:Percentage">percentage</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Numeral systems</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>{{<a href="/wiki/Module:BaseConvert" title="Module:BaseConvert">#invoke:BaseConvert</a>|XtoY}}</li> <li><a href="/wiki/Template:Binary" title="Template:Binary">binary</a></li> <li><a href="/wiki/Template:Decimal2Base" title="Template:Decimal2Base">decimal2Base</a></li> <li><a href="/wiki/Template:Hex2dec" title="Template:Hex2dec">hex2dec</a></li> <li><a href="/wiki/Template:Hexadecimal" title="Template:Hexadecimal">hexadecimal</a></li> <li><a href="/wiki/Template:Octal" title="Template:Octal">octal</a></li> <li><a href="/wiki/Template:Quaternary" title="Template:Quaternary">quaternary</a></li> <li><a href="/wiki/Template:Rn" title="Template:Rn">rn</a></li> <li><a href="/wiki/Template:Roman" title="Template:Roman">roman</a></li> <li><a href="/wiki/Template:Ternary" title="Template:Ternary">ternary</a></li> <li><a href="/wiki/Template:Vigesimal" title="Template:Vigesimal">vigesimal</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Conversions" style="font-size:114%;margin:0 4em">Conversions</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;font-size:110%;"><div style="padding:0 0.25em"><table style="margin:0 auto 0;text-align:left;"><tbody><tr style="vertical-align:top"><td> <table style="padding-right:2.5em;"><tbody><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Convert" title="Template:Convert">convert</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> many units (see: <a href="/wiki/Template:Convert/list_of_units" title="Template:Convert/list of units">list</a>)</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Cvt" class="mw-redirect" title="Template:Cvt">cvt</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> abbreviated {{<a href="/wiki/Template:Convert" title="Template:Convert">convert</a>}}</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Convinfobox" title="Template:Convinfobox">convinfobox</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> {{<a href="/wiki/Template:Convert" title="Template:Convert">convert</a>}} for infoboxes</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Bbl_to_t" title="Template:Bbl to t">bbl to t</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> barrels of oil to tonnes</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Long_ton" title="Template:Long ton">long ton</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> long hundredweights, quarters and pounds to kilograms; long tons and hundredweights to pounds and metric tons</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Miles-chains" title="Template:Miles-chains">miles-chains</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> miles and chains to kilometres linking "chains"</td></tr></tbody></table></td><td> <table><tbody><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Decdeg" title="Template:Decdeg">decdeg</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> degrees, minutes, and seconds to <a href="/wiki/Decimal_degrees" title="Decimal degrees">decimal degrees</a></td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Deg2DMS" title="Template:Deg2DMS">deg2dms</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> decimal degrees to degrees, minutes, and seconds</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Deg2HMS" title="Template:Deg2HMS">deg2hms</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> decimal degrees to <a href="/wiki/Hour_angle" title="Hour angle">hour angle</a> (in hours, minutes, and seconds)</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:HMS2Deg" title="Template:HMS2Deg">hms2deg</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> <a href="/wiki/Hour_angle" title="Hour angle">hour angle</a> (in hours, minutes, and seconds) to decimal degrees</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Inflation" title="Template:Inflation">inflation</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> calculate inflation of Consumer Price Index-related prices</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Pop_density" title="Template:Pop density">pop density</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> population density in an area</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Track_gauge" title="Template:Track gauge">track gauge</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> railway track gauges</td></tr></tbody></table></td></tr></tbody></table></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Notation_and_formatting" style="font-size:114%;margin:0 4em">Notation and <a href="/wiki/Category:Mathematical_formatting_templates" title="Category:Mathematical formatting templates">formatting</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;font-size:110%;"><div style="padding:0 0.25em"><table style="margin:0 auto 0;text-align:left;"><tbody><tr style="vertical-align:top"><td> <table style="padding-right:2.5em;"><tbody><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Bigmath" title="Template:Bigmath">bigmath</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> bigger font to match <a href="/wiki/TeX" title="TeX">TeX</a> <samp>\displaystyle</samp> (standalone formulas only)</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <ul><li><a href="/wiki/Template:Bra-ket" title="Template:Bra-ket">bra-ket</a></li> <li><a href="/wiki/Template:Braket" title="Template:Braket">braket</a></li> <li><a href="/wiki/Template:Bra" class="mw-redirect" title="Template:Bra">bra</a></li> <li><a href="/wiki/Template:Ket" class="mw-redirect" title="Template:Ket">ket</a></li></ul></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> <a href="/wiki/Bra%E2%80%93ket_notation" title="Bra–ket notation">bra–ket notation</a></td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Ceil" title="Template:Ceil">ceil</a>, <a href="/wiki/Template:Floor" title="Template:Floor">floor</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> calculations <a href="https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##expr" class="extiw" title="mw:Help:Extension:ParserFunctions">:mw:Help:#expr</a>; formatting indicators ⌈3.14⌉, ⌊3.14⌋ (no calculation performed)</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Fraction" title="Template:Fraction">fraction</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> slant fractions 3⁄5 (not for maths/science articles; use standing or upright fractions <code>{{<a href="/wiki/Template:Sfrac" title="Template:Sfrac">sfrac</a>}}</code> instead)</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Intmath" title="Template:Intmath">intmath</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> <a href="/wiki/Integral_symbol" title="Integral symbol">integral symbols</a></td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <li><a href="/wiki/Template:Langle" title="Template:Langle">langle</a></li> <li><a href="/wiki/Template:Rangle" title="Template:Rangle">rangle</a></li> <li><a href="/wiki/Template:Angle_bracket" title="Template:Angle bracket">angbr</a></li></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> <a href="/wiki/Bracket#Angular_brackets" title="Bracket">angular brackets</a></td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <li><a href="/wiki/Template:Ldelim" title="Template:Ldelim">ldelim</a></li> <li><a href="/wiki/Template:Rdelim" title="Template:Rdelim">rdelim</a></li></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> multiline delimiters (2–5 lines inclusive)</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Abs" class="mw-redirect" title="Template:Abs">abs</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> absolute values (paired vertical lines)</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Math" title="Template:Math">math</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> short text-based formulas</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Mathcal" title="Template:Mathcal">mathcal</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> [mathematical] calligraphic font; alternative to <a href="/wiki/LaTeX" title="LaTeX">LaTeX</a> <samp>\mathcal{...}</samp></td></tr></tbody></table></td><td> <table><tbody><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Mvar" title="Template:Mvar">mvar</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> individual italicized maths variables in normal text</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <li><a href="/wiki/Template:Overline" title="Template:Overline">overline</a></li> <li><a href="/wiki/Template:Underline" title="Template:Underline">underline</a></li></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> a line set above/below a sequence of characters</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Overarc" title="Template:Overarc">overarc</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> an arc set above a sequence of characters</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <li><a href="/wiki/Template:Overset" title="Template:Overset">overset</a></li> <li><a href="/wiki/Template:Underset" title="Template:Underset">underset</a></li></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> arbitrary characters/diacritics set above/below one another</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Pars" title="Template:Pars">pars</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> parentheses that can be resized (∑)</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Sfrac" title="Template:Sfrac">sfrac</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> "standing" or upright fractions ⁠3/5⁠ (use in maths/science articles instead of<code>{{<a href="/wiki/Template:Fraction" title="Template:Fraction">fraction</a>}}</code>)</td></tr><tr style="vertical-align:top"><td style="vertical-align:middle;text-align:right;padding-right:1.0em;"> <li><a href="/wiki/Template:Sub" title="Template:Sub">sub</a></li> <li><a href="/wiki/Template:Sup" title="Template:Sup">sup</a></li> <li><a href="/wiki/Template:Su" title="Template:Su">su</a></li></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> subscripts and superscripts</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Tmath" title="Template:Tmath">tmath</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> Wrap <a href="/wiki/TeX" title="TeX">TeX</a> in <math> tags</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Tombstone" title="Template:Tombstone">tombstone</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> symbol indicating the <a href="/wiki/Tombstone_(typography)" title="Tombstone (typography)">end of a proof</a></td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Val" title="Template:Val">val</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> measurement values, uncertainties and units</td></tr><tr style="vertical-align:top"><td style="text-align:right;white-space:nowrap;padding-right:1.0em;"> <a href="/wiki/Template:Vec" class="mw-redirect" title="Template:Vec">vec</a></td><td style="font-size:90%; vertical-align:middle;line-height:1.3em;font-style:italic;"> various overarrows, underarrows, etc.</td></tr></tbody></table></td></tr></tbody></table></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="*Boxes_*Tags_*Notices" style="font-size:114%;margin:0 4em"> <li>Boxes</li> <li>Tags</li> <li>Notices</li> </div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;font-size:110%;"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;background:transparent;color:inherit;"><div style="padding:0px"><table class="navbox-columns-table" style="border-spacing: 0px; text-align:left;width:100%;"><tbody><tr><td class="navbox-abovebelow" style="font-weight:bold;">Boxes</td><td class="navbox-abovebelow" style="border-left:2px solid #fdfdfd;font-weight:bold;">Tags</td></tr><tr style="vertical-align:top"><td class="navbox-list" style="padding:0px;text-align:center;width:10em;"><div> <ul><li><a href="/wiki/Template:Arithmetic_operations" title="Template:Arithmetic operations">arithmetic operations</a></li> <li><a href="/wiki/Template:Calculus" title="Template:Calculus">calculus</a></li> <li><a href="/wiki/Template:Infobox_mathematical_function" title="Template:Infobox mathematical function">Infobox mathematical function</a></li> <li><a href="/wiki/Template:Functions" title="Template:Functions">functions</a></li></ul> </div></td><td class="navbox-list" style="border-left:2px solid #fdfdfd;padding:0px;text-align:center;width:10em;"><div> <ul><li><a href="/wiki/Template:Metricate" title="Template:Metricate">metricate</a></li> <li><a href="/wiki/Template:Undue_precision" title="Template:Undue precision">undue precision</a></li> <li><a href="/wiki/Template:Units_attention" title="Template:Units attention">units attention</a></li></ul> </div></td></tr></tbody></table></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" data-file-width="180" data-file-height="185"></noscript><span class="lazy-image-placeholder" style="width: 16px;height: 16px;" data-src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" data-alt="" data-width="16" data-height="16" data-srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-class="mw-file-element">  <a href="/wiki/Category:Mathematics_templates" title="Category:Mathematics templates">Category</a></li> <li><a href="/wiki/Module:Math" title="Module:Math">Module:Math</a></li></ul> </div></td></tr></tbody></table></div>    </section></div> <noscript><img src="https://login.m.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&mobile=1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&oldid=1257392430">https://en.wikipedia.org/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&oldid=1257392430</a>"</div></div> </div> <div class="post-content" id="page-secondary-actions"> </div> </main> <footer class="mw-footer minerva-footer" role="contentinfo"> <a class="last-modified-bar" href="/w/index.php?title=Wikipedia:Manual_of_Style/Dates_and_numbers&action=history"> <div class="post-content last-modified-bar__content"> Last edited on 14 November 2024, at 17:57 </div> </a> <div class="post-content footer-content"> <div id="p-lang"> <h4>Languages</h4> <section> <ul id="p-variants" class="minerva-languages"></ul> <ul class="minerva-languages"><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Wikipedia:Schreibweise_von_Zahlen" title="Wikipedia:Schreibweise von Zahlen – German" lang="de" hreflang="de" data-title="Wikipedia:Schreibweise von Zahlen" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%88%DB%8C%DA%A9%DB%8C%E2%80%8C%D9%BE%D8%AF%DB%8C%D8%A7:%D8%B4%DB%8C%D9%88%D9%87%E2%80%8C%D9%86%D8%A7%D9%85%D9%87/%D8%AA%D8%A7%D8%B1%DB%8C%D8%AE%E2%80%8C%D9%87%D8%A7_%D9%88_%D8%A7%D8%B9%D8%AF%D8%A7%D8%AF" title="ویکی‌پدیا:شیوه‌نامه/تاریخ‌ها و اعداد – Persian" lang="fa" hreflang="fa" data-title="ویکی‌پدیا:شیوه‌نامه/تاریخ‌ها و اعداد" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Wikip%C3%A9dia:Conventions_concernant_les_nombres" title="Wikipédia:Conventions concernant les nombres – French" lang="fr" hreflang="fr" data-title="Wikipédia:Conventions concernant les nombres" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Wikipedia:Pedoman_gaya/Tanggal_dan_angka" title="Wikipedia:Pedoman gaya/Tanggal dan angka – Indonesian" lang="id" hreflang="id" data-title="Wikipedia:Pedoman gaya/Tanggal dan angka" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%95%D7%99%D7%A7%D7%99%D7%A4%D7%93%D7%99%D7%94:%D7%AA%D7%90%D7%A8%D7%99%D7%9B%D7%99%D7%9D" title="ויקיפדיה:תאריכים – Hebrew" lang="he" hreflang="he" data-title="ויקיפדיה:תאריכים" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target">עברית</a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9F%D1%80%D0%B5%D0%B4%D0%BB%D0%BE%D1%88%D0%BA%D0%B0:%D0%9D%D0%B0%D0%B2%D0%B5%D0%B4%D0%B5%D0%BD%D0%B0_%D0%BC%D1%80%D0%B5%D0%B6%D0%BD%D0%B0_%D1%81%D1%82%D1%80%D0%B0%D0%BD%D0%B8%D1%86%D0%B0/doc" title="Предлошка:Наведена мрежна страница/doc – Macedonian" lang="mk" hreflang="mk" data-title="Предлошка:Наведена мрежна страница/doc" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target">Македонски</a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D9%88%D9%8A%D9%83%D9%8A%D8%A8%D9%8A%D8%AF%D9%8A%D8%A7:%D8%B7%D8%B1%D9%8A%D9%82%D8%A9_%D8%A7%D9%84%D9%83%D8%AA%D8%A7%D8%A8%D9%87/%D8%AA%D9%88%D8%A7%D8%B1%D9%8A%D8%AE_%D9%88_%D8%A7%D8%B9%D8%AF%D8%A7%D8%AF" title="ويكيبيديا:طريقة الكتابه/تواريخ و اعداد – Egyptian Arabic" lang="arz" hreflang="arz" data-title="ويكيبيديا:طريقة الكتابه/تواريخ و اعداد" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target">مصرى</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Wikipedia:Manual_gaya_penulisan/Tarikh_dan_nombor" title="Wikipedia:Manual gaya penulisan/Tarikh dan nombor – Malay" lang="ms" hreflang="ms" data-title="Wikipedia:Manual gaya penulisan/Tarikh dan nombor" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target">Bahasa Melayu</a></li><li class="interlanguage-link interwiki-min mw-list-item"><a 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