What3Words
FreemiumLiveLast verified 24 Sept 2026
Converts GPS coordinates to unique three-word addresses worldwide and back again.
Example request
curl -s 'https://api.what3words.com/v3/convert-to-3wa?key=$API_KEY&coordinates=51.521251,-0.203586&language=en&format=json'
Free tier, in plain English
The Free plan has no stated monthly quota, just a 5 requests/second rate limit; it's pitched for testing an integration.
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