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Latitude/longitude to UTM converter

Enter a latitude and longitude and instantly get its UTM grid reference — zone, hemisphere, easting and northing — on the WGS84 datum, with a live map and one-tap copy. A reverse section turns a UTM reference back into lat/long. Everything runs in your browser.

UTM reference
18T 583959 4507351
Zone
18T
Hemisphere
Northern (N)
Easting (m)
583959 m
Northing (m)
4507351 m

All coordinates use the WGS84 datum.

Drag the marker to adjust — or tap the map to move it.

UTM → latitude/longitude

Have a UTM reference? Enter the zone, band letter and easting/northing to get the latitude and longitude back.

Latitude, longitude
40.714349, -74.005970

The band letter (C–X) sets the latitude band and hemisphere; N–X are northern, C–M southern. All values use the WGS84 datum.

What is UTM?

UTM (Universal Transverse Mercator) is a grid coordinate system that divides Earth into 60 north–south zones, each 6° of longitude wide. Instead of degrees, a point is given as a zone, hemisphere and an easting and northing measured in meters — convenient flat-plane coordinates for surveying, mapping and field work.

How to convert lat/long to UTM

  1. Type or paste a latitude and longitude (decimal degrees) into the box above, or tap “Use my location”.
  2. Read the UTM zone, hemisphere, easting and northing — they update as you type.
  3. Copy the full reference (e.g. 18T 583960 4507523) or any single field, and preview the point on the map.
  4. To go the other way, enter a zone, band letter and easting/northing in the reverse section to recover the latitude and longitude.

Parts of a UTM coordinate

ComponentExampleMeaning
Zone number18One of 60 6°-wide longitude zones (1–60)
Band letterTMGRS latitude band (C–X); also fixes the hemisphere
HemisphereNNorthern (N) or Southern (S)
Easting583960 mMeters east of the zone’s false origin (500,000 m line)
Northing4507523 mMeters north of the equator (or from 10,000,000 m in the south)

Accuracy, range and the WGS84 datum

This converter uses the Karney/Krüger transverse-Mercator series on the WGS84 datum, accurate to a few millimeters inside a zone — the same math standard GIS tools use. UTM is defined for latitudes from 80°S to 84°N; polar regions use UPS instead. For a 100 km-square military grid reference, see the lat/long to MGRS tool, or convert every format at once with the coordinate converter.

When to use UTM

UTM shines where you need distances and areas in meters on a flat plane: land surveying, construction, GPS field data, geology and large-scale topographic maps. For sharing a spot in a phone or web link, plain decimal degrees are easier; for addresses without a street, try a Plus Code.

See all tools →

Frequently asked questions

How do I convert latitude and longitude to UTM?
Enter your lat/long in decimal degrees above and read the zone, hemisphere, easting and northing instantly. The conversion runs in your browser on the WGS84 datum — nothing is uploaded. You can copy the full reference or any single field, and the reverse section turns UTM back into lat/long.

What is the easting and northing in UTM?
Easting is the distance in meters east of a zone’s reference line (the central meridian is set to 500,000 m to avoid negatives), and northing is the distance in meters north of the equator. In the southern hemisphere northing is measured from a 10,000,000 m false origin so it also stays positive.

What does the letter in a UTM zone mean?
The letter (e.g. the T in 18T) is the MGRS latitude band — an 8°-tall row from C near 80°S up to X at 84°N (I and O are skipped). Bands N through X are in the northern hemisphere and C through M in the southern, so the letter also tells you the hemisphere.

How many UTM zones are there?
There are 60 numbered UTM zones, each 6° of longitude wide, running west to east from zone 1 (180°W) to zone 60 (180°E). A few zones near Norway and Svalbard are widened or shifted by special rule. UTM covers 80°S to 84°N; the poles use the separate UPS system.

Is this UTM converter accurate and private?
Yes. It uses the Karney transverse-Mercator series on WGS84, accurate to a few millimeters within a zone, and runs entirely in your browser — your coordinates are never sent to a server. For other grids, see lat/long to MGRS or the all-in-one coordinate converter.

Can I convert UTM back to latitude and longitude?
Yes. Use the reverse section on this page: enter the zone number, band letter and the easting and northing, and you’ll get the latitude and longitude back, with a map preview. For the opposite direction from other notations, try the DMS to decimal converter.