Introduction

what3words is an alternative geocode system designed to identify any location on the planet. The system divides the world into a grid of 57 trillion 3-by-3-metre squares, each of which has a three-word address. For example, the front door of HERE’s Berlin office is identified by "///wage.mere.heap".

THE HERE-hosted what3words API allows you to convert 3 word addresses to coordinates and also coordinates to 3 word addresses. It features a powerful AutoSuggest function, which can validate and autocorrect user input and limit it to specific geographic areas. It also allows you to request a section of the what3words grid (which can be requested as GeoJSON to display on online maps), and to request an up-to-date list of all languages supported by the API.

All coordinates are latitude,longitude pairs in standard WGS-84 as used worldwide in GPS systems. All latitudes must be in the range of -90 to 90 (inclusive).

For information on:

• How to quickly set up and start using the what3words API, see Get started.

• Terms and conditions covering this documentation, see the HERE Documentation License.

• How HERE is committed to respecting your privacy and to complying with applicable data protection and privacy laws, see the HERE Privacy Policy.