What is the difference between UTM and MGRS coordinates?
MGRS coordinates are very closely related to UTM coordinates, but there are some differences. Both systems divide the world into 60 zones of longitude the same way. But, to identify the squares which are 100,000 meters on a side, MGRS uses two letters, where UTM uses 1 or 2 digits. MGRS inserts a latitude band letter after the longitude zone number. The latitude bands are 8 degrees tall, with the Equator separating bands M and N.
