Is this the real what3words service?

No. This is a client-side demonstration that uses a deterministic word-grid algorithm inspired by the what3words concept. The words produced will not match the official what3words addresses. For production use, visit what3words.com.

How precise is the location grid?

The grid step is approximately 0.000027 degrees, which corresponds to roughly 3 meters at the equator — the same order of magnitude as the real what3words service.

Will the same coordinates always give the same words?

Yes. The algorithm is fully deterministic: identical lat/long inputs always produce the same three words, regardless of when or where you run it.

Can I reverse the three-word address back to coordinates?

Yes. Paste the three-word address into the reverse lookup panel and the tool will decode it back to the original grid-cell center coordinates.

What coordinate format does this tool accept?

Decimal degrees only (e.g. 51.5074, −0.1278). For DMS coordinates, convert them first using the DMS-to-Decimal tool on this site.

What3words Style Converter

Name: What3words Style Converter
Availability: InStock
Author: Nham Vu

Enter a decimal latitude and longitude to get a deterministic three-word location address — a client-side demo of the what3words concept.

Encode Coordinates

Latitude (−90 to 90)

Longitude (−180 to 180)

Decode Three Words

Three-word address

No result yet

Enter coordinates on the left and click Convert.

About this demo

Grid step: 0.000027° (~3 m at equator). Words are picked from a 1,000-word vocabulary using deterministic index arithmetic. Results are stable but do not match the official what3words API.

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Summary

Enter a decimal latitude and longitude to get a deterministic three-word location address — a client-side demo of the what3words concept.

How it works

Enter a decimal latitude (−90 to 90) and longitude (−180 to 180).
The tool quantizes the coordinates into a grid of roughly 3-meter squares (0.000027° steps).
Each grid cell is mapped to a unique pair of indices derived from its row and column.
Three words are selected from a 1,000-word vocabulary using those indices, producing a stable address.
Copy the three-word address with one click for sharing or reference.

Use cases

Demonstrate the what3words geocoding concept to students and colleagues.
Generate human-readable location codes for internal project coordinates.
Test mapping applications that accept three-word-style location identifiers.
Explore how grid-based geocoding handles edge cases near the poles and date line.
Share a memorable location code without exposing raw numeric coordinates.
Quickly encode field survey points as word triples for easy radio communication.

Frequently Asked Questions

Last updated: 2026-06-24 · Reviewed by Nham Vu