Latitude longitude to UTM conversion for field work
Latitude longitude is common for map locations; UTM is practical for metre-based field work.
Field takeaways
- Latitude longitude is usually WGS84 degrees.
- UTM is metre-based and requires zone.
- Do not ignore datum.
- KML uses lat/lon; CAD/GIS may need projected metres.
- MapLab Survey helps preserve coordinate context.
Degrees to metres
Latitude and longitude describe a position on a curved surface; UTM projects it onto a flat grid so distances can be worked in metres. The conversion is exact mathematics, not an approximation.
The zone comes with it
UTM coordinates are only meaningful with their zone number. The same easting and northing repeat in every zone around the world.
Datum is separate from projection
UTM on WGS84 and UTM on a national datum give different numbers for the same point. State both.
Verify before bulk conversion
Convert one point you know in both systems and check it lands where it should, then run the rest of the list.
Try these steps on your own phone.
MapLab Survey handles RTK/GNSS point capture, drawing, area and volume calculations and coordinate conversion, then exports to DXF, KML/KMZ, GeoJSON, Shapefile, GeoPackage, NCZ or CSV. Capture, calculation and export work offline. Live NTRIP corrections and online basemaps need a connection.
Frequently asked questions
Can lat/lon convert to UTM?
Yes, with datum and zone.
Is UTM in metres?
Yes.
Does KML use UTM?
KML generally uses WGS84 lat/lon.
What if zone is missing?
The coordinate is incomplete.
Technical references
The field guidance in this article is aligned with the technical and official references below.
Related: What is UTM? · Coordinate conversion app · Find and share coordinates · MapLab Survey