UTM Converter
Convert coordinates between latitude and longitude and the Universal Transverse Mercator grid. Paste one coordinate per line, either decimal degrees such as 52.5200, 13.4050 or UTM such as 33U 391390 5817855, and each line is converted the other way on the WGS84 datum with the proj4 library, including the Norway and Svalbard zone exceptions. Useful for surveying, hiking maps, search and rescue and GIS work.
Frequently asked questions
How do I enter UTM coordinates?
Write the zone number with its latitude band letter, then the easting and the northing in meters, for example 33U 391390 5817855. Separators can be spaces or commas, and suffixes such as mE and mN are accepted.
What is the letter after the zone number?
It is the latitude band, from C in the far south to X in the far north, as GPS devices and MGRS show it. Bands C to M lie south of the equator and N to X north of it, which tells the converter which hemisphere the northing belongs to.
What if my data uses N and S for the hemisphere?
N works either way, because band N and the northern hemisphere use the same northing. For S the converter first reads it as band S, between 40 and 48 degrees north, and if the northing does not fit that band it treats S as the southern hemisphere.
How is the zone chosen for latitude and longitude?
Normally from the longitude in six degree steps, with zone 1 starting at 180 degrees west. The official exceptions apply: zone 32V is widened over southwestern Norway, and around Svalbard the zones 31X, 33X, 35X and 37X replace the even ones.
Which datum and library are used?
All conversions use the WGS84 ellipsoid, the datum of GPS, with the transverse Mercator projection of the proj4 library. Coordinates on another datum, such as ED50 or NAD27, can differ by tens to hundreds of meters.
How precise are the results?
Eastings and northings are written in meters with two decimals, and latitudes and longitudes with six decimals. Converting a point to UTM and back reproduces it to within the rounding of the output.
What ranges are allowed?
UTM covers latitudes from 80 degrees south to 84 degrees north, and the polar regions use UPS, which this tool does not convert. Zones run from 1 to 60, eastings from 100,000 to 900,000 meters and northings from 0 to 10,000,000 meters.
Why is my UTM coordinate rejected with a band error?
The converter checks that the computed latitude lies in the band you gave, with half a degree of tolerance. A mismatch usually means a wrong band letter, swapped easting and northing or a northing from the other hemisphere.
Can I convert a list of mixed coordinates?
Yes. Each line is detected on its own, so you can mix latitude and longitude pairs and UTM coordinates, up to 10,000 lines. The output keeps the order with one converted coordinate per line.
Do I enter latitude or longitude first?
Latitude first, then longitude, in decimal degrees separated by a comma or a space, for example -33.8688, 151.2093 for Sydney. Use the DMS Converter first if your coordinates are in degrees, minutes and seconds.