Lat/Lon to UTM Converter
Enter a latitude/longitude and get the UTM zone, hemisphere, easting and northing instantly — or go the other way, UTM back to decimal degrees. Runs entirely in your browser; nothing is uploaded.
60 zones, 6° of longitude each
The world is divided into 60 UTM zones numbered 1 (180°W) to 60 (174°E), each spanning 6° of longitude. Enter a latitude/longitude above and the zone is calculated automatically.
Hemisphere matters
UTM northing is measured differently north vs. south of the equator — a 10,000,000 m offset is added in the southern hemisphere so northing values are always positive. Always specify N or S along with the zone.
Easting/northing only make sense with a zone
A UTM easting/northing pair is meaningless without its zone number and hemisphere — the same easting/northing values point to completely different places in different zones. Always keep all three together.
Enter your latitude/longitude in the "Lat/Lon → UTM" card above — the zone (1–60) and hemisphere (N/S) are calculated automatically along with the easting and northing in meters.
It uses the standard ellipsoidal transverse Mercator formulas on the WGS84 datum (the same datum GPS and ArcGIS Online use) — conversions round-trip to sub-millimeter precision. This is the same math used by professional GIS software for WGS84 UTM projections.
No — the conversion runs entirely in your browser using JavaScript. Nothing is sent to GISGP's servers.
Yes — use GISGP's CRS File Converter to reproject an entire CSV or Excel file of coordinates between WGS84, UTM (any zone), State Plane, and 180+ other coordinate systems at once.
Both are projected (meters, not degrees) systems, but UTM divides the world into 60 narrow zones for high local accuracy (survey/engineering-grade), while Web Mercator (EPSG:3857, used by ArcGIS Online basemaps and most web maps) is a single global projection optimized for map tiles, with significant area distortion near the poles. Use UTM for measurement, Web Mercator for web mapping display.
Batch-convert coordinates for ArcGIS Online
GISGP imports and exports ArcGIS Online Feature Service data in Excel, CSV, Shapefile, KML and GeoJSON — with coordinate system reprojection built in.
Create free account →Related: Full Coordinate Converter · CRS File Converter · Fix points in the ocean