UTM to lat/lon (inverse) API

Converts a UTM grid coordinate (zone, hemisphere, easting, northing) back to geographic latitude/longitude on WGS-84 using the Snyder inverse series — the reverse of forward UTM projection. Answers 'What lat/lon does this UTM coordinate correspond to?', 'How do I un-project a UTM easting/northing?'.

Price$0.06per request

MethodPOST

Route/v1/geo/utm-to-latlon

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

geogisutminverseprojectiontransverse-mercatorwgs84gridsnyder

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

Integration docs

Example request

{
  "zone": 31,
  "hemisphere": "N",
  "easting": 452482.53,
  "northing": 5411717.18
}

Example response

{
  "utm": {
    "zone": 31,
    "hemisphere": "N",
    "easting": 452482.53,
    "northing": 5411717.18
  },
  "latitude": 48.8566,
  "longitude": 2.3522,
  "interpretation": "UTM zone 31N E452482.53 N5411717.18 -> 48.8566, 2.3522 (WGS-84, Snyder inverse series)."
}

Input schema

{
  "type": "object",
  "required": [
    "zone",
    "hemisphere",
    "easting",
    "northing"
  ],
  "properties": {
    "zone": {
      "type": "integer",
      "examples": [
        31
      ]
    },
    "hemisphere": {
      "type": "string",
      "enum": [
        "N",
        "S"
      ],
      "examples": [
        "N"
      ]
    },
    "easting": {
      "type": "number",
      "examples": [
        452482.53
      ]
    },
    "northing": {
      "type": "number",
      "examples": [
        5411717.18
      ]
    }
  }
}

Output schema

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