MGRS Converter
Convert MGRS (Military Grid Reference System) coordinates to latitude/longitude, and lat/lon to MGRS — free, in your browser, with 1m to 1km precision.
18T WL 80735 04695 to get decimal degrees, or enter lat/lon to get the MGRS grid reference. Part of GISGP's free coordinate converter — also handles UTM, DMS, Web Mercator, State Plane, British National Grid and 180+ other CRS.Open the MGRS converter
The MGRS ↔ lat/lon tool is built into GISGP's full coordinate converter — click below to jump straight to it (pre-scrolled and focused).
Convert MGRS now →Enter your MGRS coordinate or lat/lon
MGRS format looks like 18T WL 80735 04695 — a UTM zone + latitude band, a 100,000m grid square ID, then easting/northing digits. Works with or without spaces.
Instant conversion, both directions
MGRS → decimal degrees happens as you type. Lat/lon → MGRS is available from the same tool, with adjustable precision from 1km (2-digit) down to 1m (5-digit) grid references.
Export or use directly
Download the result as GeoJSON or CSV, or copy the decimal degrees straight into ArcGIS Online, Google Maps or any GIS tool.
MGRS references from 2 digits (1km precision) to 10 digits (1m precision) are supported for both reading and generating grid references.
Yes, both directions are supported in the same tool — enter decimal degrees in the Lat/Lon card to get the MGRS reference, or enter an MGRS string in the MGRS card to get decimal degrees.
No — the converter accepts MGRS strings with or without spaces (18TWL8073504695 or 18T WL 80735 04695 both work).
Yes — the same free tool also handles decimal degrees, DMS, Web Mercator, UTM, NAD83, US State Plane, British National Grid and 180+ other coordinate systems. See the full GISGP Coordinate Converter.
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Create free account →Related: Full Coordinate Converter · Lat/Lon ↔ UTM · CSV → GeoJSON