MGRS to lat/lon (inverse) API

Decodes a Military Grid Reference System (MGRS) string (zone, band, 100km square, digits) to geographic latitude/longitude on WGS-84, resolving the 100km square and northing band via the underlying UTM inverse. Answers 'What lat/lon is this MGRS grid reference?', 'How do I decode an MGRS coordinate to GPS?'.

Price$0.08per request

MethodPOST

Route/v1/geo/mgrs-to-latlon

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

geogismgrsinversegrid-referencemilitaryutmwgs84decode

API URLhttps://x402.hexl.dev/v1/geo/mgrs-to-latlon

Integration docs

Example request

{
  "mgrs": "31UDQ5248211717"
}

Example response

{
  "mgrs": "31UDQ5248211717",
  "zone": 31,
  "band": "U",
  "square": "DQ",
  "utm": {
    "zone": 31,
    "easting": 452482,
    "northing": 5411717
  },
  "latitude": 48.856598,
  "longitude": 2.352193,
  "interpretation": "MGRS 31UDQ5248211717 -> 48.856598, 2.352193 (decoded via UTM zone 31U)."
}

Input schema

{
  "type": "object",
  "required": [
    "mgrs"
  ],
  "properties": {
    "mgrs": {
      "type": "string",
      "examples": [
        "31UDQ5248211717"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}