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what3words

Three-word address; paid

Official site consultedMapsSandbox

Last verified: 1 October 2026

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The what3words API converts three-word addresses to coordinates and back. It offers five endpoints and wrappers for JavaScript, Android, Java, Python, PHP and Swift. 27+ languages are supported.

Services
  • convert-to-coordinates
  • convert-to-3wa
  • AutoSuggest
  • grid-section
  • available-languages
Access requirements

API key required; the free plan is limited to AutoSuggest and available-languages (10 requests per second).

Sandbox: Yes

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