CINXE.COM
Online geographic coordinate converter
<html> <head> <title> Online geographic coordinate converter </title> <meta name="description" content="Online geographic coordinate converter" /> <meta name="author" content="Charles F. F. Karney" /> <meta name="keywords" content="geographic coordinate conversions, geographic coordinates, latitude and longitude, degrees minutes seconds, universal transverse Mercator, UTM, easting northing and zone, universal polar sterographic, UPS, military grid reference system, MGRS, online calculator, WGS84 ellipsoid, GeographicLib" /> </head> <body> <h3> Online geographic coordinate conversions using the <a href="https://geographiclib.sourceforge.io/C++/doc/GeoConvert.1.html"> GeoConvert</a> utility </h3> <form action="/cgi-bin/GeoConvert" method="get"> <p> Location (ex. «<tt>33.33 44.4</tt>», «<tt>33d19'47"N 44d23.9'E</tt>», «<tt>38SMB4488</tt>», «<tt>38n 444000 3688000</tt>»):<br> <input type=text name="input" size=40 value=""> </p> <table> <tr> <td> Output zone:<br> <select name="zone" size=1> <option SELECTED value="-3">Match input or standard</option> <option value="-1">Standard UPS/UTM zone</option> <option value="0">UPS</option> <option value="-2">Standard UTM zone</option> <option value="1">UTM zone 1</option> <option value="2">UTM zone 2</option> <option value="3">UTM zone 3</option> <option value="4">UTM zone 4</option> <option value="5">UTM zone 5</option> <option value="6">UTM zone 6</option> <option value="7">UTM zone 7</option> <option value="8">UTM zone 8</option> <option value="9">UTM zone 9</option> <option value="10">UTM zone 10</option> <option value="11">UTM zone 11</option> <option value="12">UTM zone 12</option> <option value="13">UTM zone 13</option> <option value="14">UTM zone 14</option> <option value="15">UTM zone 15</option> <option value="16">UTM zone 16</option> <option value="17">UTM zone 17</option> <option value="18">UTM zone 18</option> <option value="19">UTM zone 19</option> <option value="20">UTM zone 20</option> <option value="21">UTM zone 21</option> <option value="22">UTM zone 22</option> <option value="23">UTM zone 23</option> <option value="24">UTM zone 24</option> <option value="25">UTM zone 25</option> <option value="26">UTM zone 26</option> <option value="27">UTM zone 27</option> <option value="28">UTM zone 28</option> <option value="29">UTM zone 29</option> <option value="30">UTM zone 30</option> <option value="31">UTM zone 31</option> <option value="32">UTM zone 32</option> <option value="33">UTM zone 33</option> <option value="34">UTM zone 34</option> <option value="35">UTM zone 35</option> <option value="36">UTM zone 36</option> <option value="37">UTM zone 37</option> <option value="38">UTM zone 38</option> <option value="39">UTM zone 39</option> <option value="40">UTM zone 40</option> <option value="41">UTM zone 41</option> <option value="42">UTM zone 42</option> <option value="43">UTM zone 43</option> <option value="44">UTM zone 44</option> <option value="45">UTM zone 45</option> <option value="46">UTM zone 46</option> <option value="47">UTM zone 47</option> <option value="48">UTM zone 48</option> <option value="49">UTM zone 49</option> <option value="50">UTM zone 50</option> <option value="51">UTM zone 51</option> <option value="52">UTM zone 52</option> <option value="53">UTM zone 53</option> <option value="54">UTM zone 54</option> <option value="55">UTM zone 55</option> <option value="56">UTM zone 56</option> <option value="57">UTM zone 57</option> <option value="58">UTM zone 58</option> <option value="59">UTM zone 59</option> <option value="60">UTM zone 60</option> </select> </td> <td> Output precision:<br> <select name="prec" size=1> <option value="-5">100km 1d</option> <option value="-4">10km 0.1d</option> <option value="-3">1km 0.01d 1'</option> <option value="-2">100m 0.001d 0.1'</option> <option value="-1">10m 0.0001d 1"</option> <option SELECTED value="0">1m 0.00001d 0.1"</option> <option value="1">100mm 0.01"</option> <option value="2">10mm 0.001"</option> <option value="3">1mm 0.0001"</option> <option value="4">100um 0.00001"</option> <option value="5">10um 0.000001"</option> <option value="6">1um 0.0000001"</option> <option value="7">100nm 0.00000001"</option> <option value="8">10nm 0.000000001"</option> <option value="9">1nm 0.0000000001"</option> <option value="10">0.00000000001"</option> </select> </td> </tr> </table> <p> Select action:<br> <input type="submit" name="option" value="Submit"> <input type="submit" name="option" value="Reset"> </p> <p> Results: <font size="4"><pre> input = lat lon = <font color="Blue"> </font> <a href="https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system">UTM</a>/<a href="https://en.wikipedia.org/wiki/Universal_Polar_Stereographic">UPS</a> = <font color="Blue"></font> <a href="https://en.wikipedia.org/wiki/Military_grid_reference_system">MGRS</a> = <font color="Blue"></font></pre></font> </p> </form> <hr> <p> <a href="https://geographiclib.sourceforge.io/C++/doc/GeoConvert.1.html"> GeoConvert (version 2.5)</a> converts between geographic (latitude and longitude) coordinates, <a href="https://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system"> universal transverse Mercator (UTM)</a> or <a href="https://en.wikipedia.org/wiki/Universal_Polar_Stereographic"> universal polar stereographic (UPS)</a> coordinates, and the <a href="https://en.wikipedia.org/wiki/Military_grid_reference_system"> military grid reference system (MGRS)</a>. Examples of legal geographic locations are (these all refer to roughly the same place, Cape Morris Jesup on the northern tip of Greenland): <pre> Latitude and longitude: MGRS: 83.627 -32.664 24XWT783908 W32d40 N83d37.6 YUB17770380 83°37'39"N 32°39'52"W UTM: 83:37:39 32:39:52W 25n 504158 9286521 32:39.9W 83:37.6N 430000 9290000 26n 32:40W+0:0:6 83:37.6 UPS: 32:40W+0:0:6 83:38-0:0.4 n 1617772 1403805</pre> <b>Notes:</b> <ul> <li> The letter in following the zone number in the UTM position is a hemisphere designator (n or s) and <em>not</em> the MGRS latitude band letter. "north" or "south" can also be used, e.g., 25north. <li> MGRS coordinates are taken to refer to <em>grid squares</em> (<em>not</em> to the intersections of grid lines). Thus in UTM zone 38n, the square area with easting in [444 km, 445 km) and northing in [3688 km, 3689 km) corresponds to the MGRS square 38SMB4488 (at 1 km precision). <ul> <li> When an MGRS coordinate is read, a representative point within the grid square, namely, the <em>center</em>, is returned. <li> The MGRS easting and northing are obtained by <em>truncation</em> to the requested precision (<em>not</em> rounding). </ul> <li> Usually <em>Output zone</em> should be <em>Match input or standard</em>. If the latitude and longitude are given, the standard UPS and UTM zone rules are applied; otherwise the UPS/UTM selection and the UTM zone match the input. The other choices let you override this selection. </ul> </p> <p> <a href="https://geographiclib.sourceforge.io/C++/doc/GeoConvert.1.html"> GeoConvert</a>, which is a simple wrapper of the <a href="https://geographiclib.sourceforge.io/C++/doc/classGeographicLib_1_1GeoCoords.html"> GeographicLib::GeoCoords</a> class, is one of the utilities provided with <a href="https://geographiclib.sourceforge.io/"> GeographicLib</a>. This web interface illustrates a subset of its capabilities. If you wish to use GeoConvert directly, <a href="https://sourceforge.net/projects/geographiclib/files/distrib-C++"> download</a> and compile GeographicLib. </p> <hr> <address>Charles Karney <a href="mailto:karney@alum.mit.edu"><karney@alum.mit.edu></a> (2022-04-10)</address> <a href="https://geographiclib.sourceforge.io"> GeographicLib home </a> </body> </html>