Plus Codes API: Encode and Decode Open Location Codes

Plus Codes are Google's open, license-free alternative to street addresses, useful wherever addresses are missing or imprecise.

The Geo Toolkit bundles Plus Codes, geohash, Maidenhead locators, distance and bearing math, bounding boxes, and coordinate conversion in one API.

Encode a coordinate

curl "https://geo-toolkit.p.rapidapi.com/plus-code/encode?lat=40.7128&lng=-74.0060" \
  -H "X-RapidAPI-Key: YOUR_KEY" \
  -H "X-RapidAPI-Host: geo-toolkit.p.rapidapi.com"

Response

A codeLength of 10 identifies a cell of roughly 14 × 14 meters.

{
  "code": "87G7PX7V+4H",
  "lat": 40.7128,
  "lng": -74.006,
  "codeLength": 10
}

Decode back to coordinates

GET /plus-code/decode?code=87G7PX7V%2B4H returns the cell center and its bounds. Remember to URL-encode the plus sign.

The rest of the toolkit

Geohash encode, decode, and neighbors lookups. /distance returns great-circle distance and bearing between two points. /destination projects a point from a start, bearing, and distance. /bbox builds a bounding box around a point. /coordinate converts between DD, DMS, and UTM.