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mudpuddle
/ MercatorToLatLon.js
Last active
April 24, 2025 13:48
Convert Web Mercator to WGS 84 Lat/Long
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| function MercatorToLatLon(mercX, mercY) { | |
| var rMajor = 6378137; //Equatorial Radius, WGS84 | |
| var shift = Math.PI * rMajor; | |
| var lon = mercX / shift * 180.0; | |
| var lat = mercY / shift * 180.0; | |
| lat = 180 / Math.PI * (2 * Math.atan(Math.exp(lat * Math.PI / 180.0)) - Math.PI / 2.0); | |
| return { 'Lon': lon, 'Lat': lat }; | |
| } |