UTM Coordinate Converter

In short First, a warning about the name: this UTM is the Universal Transverse Mercator map projection, and it has nothing whatever to do with the utm_source and utm_medium tags on a marketing link, which are the Urchin Tracking Module. Both have tools on this site and they answer entirely different questions. UTM divides the world into sixty zones of six degrees of longitude each, projects every zone separately, and gives a position in metres east and north rather than in degrees. Easting is measured from a false origin 500,000 m west of the zone's central meridian, so a point exactly on that meridian has easting exactly 500,000 and nothing is ever negative. In the southern hemisphere the northing counts down from a false origin of 10,000,000 m at the equator, for the same reason. Two things catch people out. Zone boundaries are hard walls: two points a hundred metres apart on either side of one have completely different eastings, so subtracting them without converting first produces nonsense. And there are six exceptions to the neat six-degree rule — zone 32 is widened over southern Norway and zones 31, 33, 35 and 37 over Svalbard — which software that implements the plain arithmetic gets wrong, placing points in the neighbouring zone entirely.