UTM to Lat Long Converter

Enter a UTM zone, hemisphere, easting and northing and get latitude and longitude on WGS84 — or convert the other way, or a whole list at once.

Coordinates & GeocodingWorldwideSource: Transverse Mercator by Krüger's series (Karney 2011), WGS84Free, no sign-up

Zone (1–60)HemisphereEasting (m)Northing (m)

A zone letter such as 18T is a latitude band: C–M are south of the equator, N–X north.

Latitude, longitude (WGS84)

40.748441, -73.985669

Latitude	40.748441
Longitude	-73.985669
Degrees, minutes, seconds	40° 44′ 54.39″ N, 73° 59′ 8.41″ W
MGRS (1 m)	18T WL 85631 11326

WGS84 ellipsoid, scale factor 0.9996, false easting 500,000 m, false northing 10,000,000 m in the south. Transverse Mercator by Krüger's series to fourth order in n as given by Karney (2011) — accurate to well under a millimetre inside a zone. Grid definitions: NGA coordinate systems. Calculated in your browser. Coordinates on another datum (NAD27, ED50) differ by up to a few hundred metres and are not converted here.

How to convert UTM to latitude and longitude

Enter the zone. The number from 1 to 60. If yours has a letter (like 18T), the letter is the latitude band: C–M means south, N–X north.
Choose the hemisphere. North or south of the equator. A southern northing counts down from 10,000,000 m at the equator.
Enter easting and northing. In metres. Easting is usually six digits, northing up to seven.
Read the result. Latitude and longitude appear at once in decimal degrees and DMS, with the point on a map.
Converting many points?. Use 'A list of UTM' to paste one per line and download a CSV.

Where UTM coordinates come from

Topographic maps

USGS and many national maps print a UTM grid; read the grid numbers and convert them for a phone map.

Survey and engineering drawings

Site plans and well records are often given in UTM metres.

Field data from a GPS unit set to UTM

Convert the readings to decimal degrees for GIS or a spreadsheet.

Wildlife and environmental records

Sightings and sample sites are often logged in UTM.

Mining claims and land records

Corner positions may be recorded as UTM coordinates.

Search and rescue

Grid positions passed over the radio convert directly to a map pin.

Going the other way

The Lat/long → UTM tab gives zone, easting, northing, grid convergence and scale factor.

Checking a coordinate in a report

The map pin shows whether the easting and northing land where the report says.

How the conversion works

UTM (Universal Transverse Mercator) splits the world into 60 zones, each 6° of longitude wide, and projects each one flat with a Transverse Mercator projection centred on the zone's middle meridian. The scale on that meridian is 0.9996, the meridian is given an easting of 500,000 m so eastings are always positive, and in the southern hemisphere northings start at 10,000,000 m at the equator.

The conversion uses Krüger's series to fourth order in the ellipsoid's third flattening, as given by Karney (2011). Within a zone it agrees with the exact projection to well under a millimetre. The WGS84 ellipsoid (a = 6,378,137 m, f = 1/298.257223563) is used throughout.

Coordinates on another datum — NAD27 on older US maps, ED50 in Europe — describe slightly different positions; read as WGS84 they can be off by tens to hundreds of metres. This page does not shift datums.

Everything runs in your browser.

Sources

Frequently asked questions

What is the difference between a zone letter and N/S?

Strictly, UTM uses a zone number and a hemisphere. The letters C–X are MGRS latitude bands that are often written after the zone number: C to M are in the southern hemisphere, N to X in the northern. Because N and S are also band letters, '33N' is ambiguous; this page asks for the hemisphere explicitly.

Why does my easting have to be between about 160,000 and 834,000?

A 6° zone is about 670 km wide at the equator and narrower further north, centred on 500,000 m. Values outside that range belong to a neighbouring zone.

Why is my southern northing so large?

South of the equator, northings count down from a 'false northing' of 10,000,000 m so they stay positive.

How accurate is the conversion?

Sub-millimetre within a zone. Real-world error comes from the coordinate itself or a datum mismatch.

Does it handle Norway and Svalbard's special zones?

Converting UTM to lat/long works for any zone you enter. Converting lat/long to UTM applies the Norway and Svalbard zone exceptions.

Can I convert to MGRS?

Yes, the result shows the MGRS reference to 1 m. The GPS Coordinate Converter covers every format.