WGS 84 → MGRS

Latitude and longitude to MGRS converter

Convert latitude and longitude to MGRS individually or in batches. Choose grid precision and see supported UTM-style coverage and coordinate-order options.

Batch coordinate converter

Enter one WGS 84 coordinate per line as latitude, longitude.

Input example: 51.5072, -0.1276

0 of 100 coordinates

The result identifies a grid cell. Only UTM-style MGRS is supported; use UPS for polar coordinates.

Output example: 30UXC9933010142

Numeric coordinates are rounded for display: decimal latitude/longitude to up to 6 decimal places, metre-based coordinates to up to 3, DMS seconds to up to 2, and DDM minutes to up to 4.

About this conversion

Convert WGS 84 latitude and longitude to a complete UTM-style Military Grid Reference System reference.

Frequently asked questions

What input is accepted?

By default, enter WGS 84 latitude first and longitude second in decimal degrees. Select Reverse coordinate order to enter longitude first. Latitude must be from −90 to 90 and longitude from −180 to 180.

What output will I receive?

Choose precision 0–5 digits per axis. The complete result identifies a successively smaller grid cell; keep its zone, band and square letters.

Which axes and units are used?

WGS 84 input defaults to latitude then longitude in degrees. MGRS output is a structured text reference that encodes a metre-based grid cell.

How are precision and datum handled?

Select 0–5 digits per axis for cells of 100 km, 10 km, 1 km, 100 m, 10 m or 1 m. A smaller output cell does not improve the source coordinate's accuracy.

Where can I use this coordinate system?

This converter supports UTM-style MGRS from 80° south through 84° north; UPS-style polar MGRS is not supported.

What should I check?

  • Use input positions within the supported UTM-style coverage.
  • Choose output precision that matches the intended grid-cell size.
  • Use numeric UPS instead for positions in the polar caps.

What does precision 5 represent?

Five digits per axis identify a 1 m cell within the 100 km square.

Can I enter a polar MGRS reference?

No. Only UTM-style MGRS is supported; use numeric UPS for the polar caps.