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UTM to Lat/Long Converter

Convert UTM (Universal Transverse Mercator) coordinates back to decimal degrees latitude/longitude. Bulk paste supported.

One per line. Decimal pairs are read as latitude, longitude. Auto-detects format. Label with Name | coords.

Awaiting input

UTM vs decimal degrees

UTM divides the world into 60 vertical zones, each 6° wide, and expresses positions inside each zone as a metric easting (x) and northing (y) in metres. Surveyors and engineers prefer UTM because distances and areas measured in metres are accurate over local areas, unlike raw lat/long where one degree of longitude varies in real-world distance depending on latitude.

Decimal degrees, in contrast, are the universal format for web mapping (Google Maps, Leaflet, Mapbox) and GPS devices. Paste your UTM strings below and we will convert them back to lat/long using the proj4 cartographic library.

Example

Input (UTM)

18T 583959 4507351

Output (decimal degrees)

40.712800, -74.006000

The input format is ZoneBand Easting Northing. Use the latitude band letter (C–X, no I/O), not N or S for hemisphere.

See all coordinate formats side by side