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class=headline-banner__wrap><div class=headline-banner__content><h1 class=headline-banner__title>Roman Numeral Converter</h1><p class=headline-banner__brief>Have you found a <strong>Roman number</strong> like <strong>MCMLXIX</strong> and wondered what year it is? Do you want to know how to write the <strong>Roman number 4</strong> or your birth year in <strong>Roman numerals</strong>? Use our <strong>Roman numeral converter</strong> for easy <strong>conversion of Roman numerals</strong>.</p></div></section></div></div></header><main class="tpl-banner__main layout-grid layout-grid--sky tpl-banner__main--tools"><article class="layout-grid__main tpl-banner__content"><p class=tpl-banner__abstract></p><section class=romanCalc><div class=romanCalc__info><h2>How to Convert to or from Roman Numerals</h2><p>Enter any <strong>number between 1 and 3999</strong> into the field labeled <strong>Arabic number</strong>. The calculator will convert the number into a <a href="/calendar/how-do-roman-numerals-work.html">Roman numeral</a>.</p><p>You can also enter Roman numerals (letters <strong>M</strong>, <strong>D</strong>, <strong>C</strong>, <strong>L</strong>, <strong>X</strong>, <strong>V</strong>, and <strong>I</strong>) into the field labeled <strong>Roman number</strong>. The calculator will convert it into an Arabic number.</p></div><form name=f><div id=app></div></form></section><div><h2>What Are Roman Numerals?</h2><ul><li><a href="/calendar/how-do-roman-numerals-work.html">Roman numbers and numerals – how do they work?</a></li><li>Learn more about <a href="/calendar/roman-calendar.html">the Roman calendar</a></li></ul><p><br></p></div><div class="fixed eight columns"><p class="help-link noprint"><a href="/date/duration-help.html"> Need some help?</a></p><div class=botlnk><h2>Help and Example Use</h2><ul><li><a href="/date/calculatoruses.html">Some typical uses for the Date Calculators</a></li></ul><h2>API Services for Developers</h2><ul><li><a href="https://dev.timeanddate.com/calculator/">API for Business Date Calculators</a></li></ul><h2>Date Calculators</h2><ul><li><a href="/date/timeduration.html">Time and Date Duration</a> – Calculate duration, with both date and time included</li><li><a href="/date/dateadd.html">Date Calculator</a> – Add or subtract days, months, years</li><li><a href="/date/weekday.html">Weekday Calculator</a> – What day is this date?</li><li><a href="/date/birthday.html">Birthday Calculator</a> – Find when you are 1 billion seconds old</li><li><a href="/date/weeknumber.html">Week Number Calculator</a> – Find the week number for any date</li></ul><h2>Related Links</h2><ul><li><a href="/calendar/info.html">Calendar & Holidays Overview</a> – Explore calendar tools</li><li><a href="/calendar/generate.html">Calendar Generator</a> – Create a calendar for any year</li><li><a href="/worldclock/">The World Clock</a> – Current time all over the world</li><li><a href="/countdown/create">Countdown to Any Date</a> – Create your own countdown</li></ul></div></div><div class="four columns push-right offset-1"><div class="clip-block clip-block--card"><article class="card card card--list card--small"><a href="/ios/datecalculator/" class=card__link aria-label="Time & Date Calculator App for iOS"><div class=card__img-wrap><img src="//c.tadst.com/gfx/ios/app/datecalc-100.png"></div><section class=card__content><h4 class=card__title>Time & Date Calculator App for iOS</h4><p class=card__text>See how long remains before a deadline or exactly when those 30 days are up.</p></section></a></article></div><div class="clip-block clip-block--card"><article class="card card card--list card--small"><a href="/services/calendar-logo.html" class=card__link aria-label="Calendar with Logo (PDF)"><div class=card__img-wrap><img src="//c.tadst.com/gfx/64x64/og-calendar-logo.png?1" width=64 height=64 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>Calendar with Logo (PDF)</h4><p class=card__text>Add your company logo to our printable calendars.</p></section></a></article></div><article class="card card--list card--small"><a href="https://dev.timeanddate.com/calculator/" class=card__link aria-label="Date Calculator API"><div class=card__img-wrap><img src="//c.tadst.com/gfx/64x64/calc-api.png?1" width=64 height=64 alt="Illustration image" class=card__img></div><section class=card__content><h4 class=card__title>Date Calculator API</h4><p class=card__text>Find a specific business date and calculate the working days in a given period.</p></section></a></article></div></article><aside class="layout-grid__sky layout-grid__sky--sticky tpl-banner__sky"><fieldset id=ad1><legend>Advertising</legend><div id='div-gpt-com-160x600'><script> AdMgr.dispSlot(1); 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