What3Words

API

Convert between 3-word addresses and precise geographic coordinates globally

Overview

The What3Words API offers RESTful endpoints to transform unique 3-word addresses (e.g., 'table.chair.lamp') into latitude/longitude coordinates and vice versa. Key endpoints include 3-word to geocoordinate conversion, reverse geocoding (coords to 3 words), and auto-suggest for partial inputs. Responses are JSON-formatted. Use cases include optimizing delivery routes, aiding emergency services in quick location finding, integrating location tagging in travel apps, and enabling precise search in e-commerce platforms. It supports multiple languages and covers all global land and sea areas.

Example Integration (JavaScript)

script.js JS


fetch('https://what3words.com')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON responses
Global coverage
3-word to coordinate conversion
Reverse geocoding
Auto-suggest functionality

Frequently Asked Questions

? Is What3Words API free to use?

Yes, it offers a free tier with limited monthly requests; paid plans are available for higher volumes and advanced features like enhanced auto-suggest.

? Does it require an API Key?

Yes, you need to register for an API key on the What3Words website to authenticate all API requests.

? What is the response format?

All API responses are in JSON format, ensuring easy parsing and integration into most applications.

Top Alternatives

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Tool Info

Pricing Freemium

Category Geocoding

Platform Public API

Pros

⊕ Memorable 10m² precise location identifiers
⊕ Freemium pricing model
⊕ Multi-language support
⊕ Easy integration
⊕ Global land/sea coverage

Cons

⊖ Rate limits on free tier
⊖ Paid plans for high-volume usage
⊖ Proprietary system (non-open standard)
⊖ No XML response option