UTM Coordinate Converter
Coordinates You Can Actually Measure Distance With
Latitude and longitude are angles, not distances — you can't subtract two lat/lon pairs and get meters apart, because a degree of longitude covers a different ground distance depending on latitude. The Universal Transverse Mercator (UTM) system solves this by projecting the globe into flat, zoned grids measured in meters, so northing and easting values behave like ordinary Cartesian coordinates. This calculator converts a latitude/longitude pair into its WGS84 UTM zone, easting, and northing.
The Formula
Easting = k0·N·[A + (1−T+C)A³÷6 + (5−18T+T²+72C−58e'²)A⁵÷120] + 500,000
Northing = k0·[M + N·tanφ·(A²÷2 + (5−T+9C+4C²)A⁴÷24 + …)]
This is the standard Snyder transverse Mercator forward projection on the WGS84 ellipsoid, the same reference datum used by GPS. Each 6°-wide longitude zone gets its own central meridian; a 500,000 m false easting keeps all easting values positive within a zone, and the southern hemisphere adds a 10,000,000 m false northing for the same reason.
Worked Examples
| Location | Lat / Lon | UTM Result |
|---|---|---|
| Eiffel Tower | 48.8584° N, 2.2945° E | Zone 31U, E: 448,252.00 m, N: 5,411,954.91 m |
| Statue of Liberty | 40.6892° N, 74.0445° W | Zone 18T, E: 580,735.87 m, N: 4,504,695.17 m |
Where UTM Coordinates Are Used
- Surveying and civil engineering — UTM's meter-based grid makes direct distance and area calculations far simpler than working in latitude/longitude.
- Military and emergency-services grid references — UTM (and the related MGRS) underpins standard military mapping and search-and-rescue coordinate reporting.
- GIS and remote sensing — satellite imagery and geographic datasets are frequently projected into a local UTM zone for accurate area and distance analysis.
How to Use This Calculator
- Enter the latitude in decimal degrees (valid UTM range: -80 to 84).
- Enter the longitude in decimal degrees (-180 to 180).
- Select Calculate to get the UTM zone, latitude band, easting, and northing.
Related Calculations
Need to convert between decimal degrees and degrees-minutes-seconds first? See the Latitude Longitude Converter, or measure the distance between two coordinate pairs with the Distance Between Coordinates Calculator.