UTM ↔ latitude/longitude coordinate converter
UTM (Universal Transverse Mercator) is a projected coordinate system that divides the globe into 60 zones to express a position in meters rather than in degrees.
Latitude/longitude → UTM
UTM → latitude/longitude
How it works
Unlike latitude/longitude, which expresses a position in angular degrees on an ellipsoid, UTM is a map projection system that divides the Earth into 60 zones of 6° of longitude each. Within each zone, positions are expressed in meters (easting and northing) on a plane, which simplifies distance and area calculations.
This system is widely used in surveying, cartography and geographic information systems (GIS), as it offers constant metric precision where latitude/longitude degrees vary in size depending on the position on the globe.
How do I find the UTM zone corresponding to a longitude?
Each zone covers 6° of longitude, with zone 1 starting at 180° west. You can calculate the approximate zone with the formula zone = floor((longitude + 180) / 6) + 1. The hemisphere (N or S) simply depends on the sign of the latitude.
100% local processing: the conversion happens entirely in your browser via WebAssembly — your coordinates are never sent to a server.