What is MGRS?
The Military Grid Reference System (MGRS) is a geocoordinate standard used by NATO militaries and emergency services. It encodes a position as a compact alphanumeric string instead of two decimal numbers, making it faster to read aloud over radio and easier to transcribe by hand.
An MGRS coordinate has three parts: the UTM grid zone designator (e.g. 18T), a two-letter 100,000 m square identifier (e.g. WL), and a numeric easting + northing pair. The number of digits in the numeric part controls the precision: 4 digits is 10 m, 8 digits is 1 m, 10 digits is 10 cm.
This converter outputs 10-digit MGRS strings for 1 m precision. Paste a list of lat/lng pairs and copy the MGRS column straight into your spreadsheet or radio log.
Example
Input (decimal degrees)
40.7128, -74.0060Output (MGRS)
18TWL8395907350