Military Grid Reference System: Difference between revisions

Revision as of 22:59, 25 June 2025

Revision as of 23:08, 25 June 2025

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The '''Military Grid Reference System''' ('''MGRS''')<ref name="DMA8358_1_Chapter3">[http://earth-info.nga.mil/GandG/publications/tm8358.1/tr83581b.html#ZZ26 DMA Technical Manual 8358.1, Chapter 3.] Datums, Ellipsoids, Grids, and Grid Reference Systems</ref> is the geocoordinate standard used by [[NATO]] militaries for locating areas on Earth. The MGRS is derived from the [[Universal Transverse Mercator coordinate system|Universal Transverse Mercator (UTM)]] grid system and the [[Universal polar stereographic coordinate system|Universal Polar Stereographic (UPS)]] grid system, but uses a different labeling convention. The MGRS is used as [[geocode]] for the entire Earth.

An example of an ''MGRS coordinate'', or ''grid reference'', is [{{Coor URL}}21_18_34.0_N_157_55_0.7_W_&language=en <code>4Q FJ 1234 56786789</code>], which consists of three parts:

* <code>4Q</code> (grid zone designator, GZD)

* <code>FJ</code> (the 100,000-meter square identifier)

* <code>1234 56786789</code> (numerical ___location; [[Easting and northing|easting]] is <code>1234</code> and [[Easting and northing|northing]] is <code>56786789</code>, in this case specifying a ___location with 10&nbsp;m resolution)

For machine-readability and database storage, all spaces may be removed.