14/09/2026

Location data does not always arrive in the format you need. One dataset might use British National Grid. Another might use UTM. A map, app or navigation tool might need WGS 84 latitude and longitude. A team working internationally might also come across MGRS, USNG, Plus Codes, Geohashes or what3words addresses.

A global coordinate converter helps make those formats easier to work with in one place.

The what3words Coordinate Converter supports single and batch conversion between British National Grid, OS Grid References, Irish Transverse Mercator, UTM, MGRS, USNG, UPS, Web Mercator, WGS 84 decimal degrees, WGS 84 degrees and decimal minutes, WGS 84 degrees, minutes and seconds, Plus Codes, Geohashes and what3words addresses.

Why global coordinate conversion matters

Coordinate systems often reflect the places and workflows they were designed for. British National Grid is widely used in Great Britain. UTM is common in mapping and GIS workflows around the world. USNG and MGRS are used in some operational and emergency contexts. WGS 84 latitude and longitude is commonly accepted by many digital mapping and navigation platforms.

If your work crosses teams, tools or countries, you may need to convert between those formats regularly.

Convert one coordinate or a batch

Sometimes you only need to check one location. Other times, you might have a spreadsheet of sites, assets, project locations or route points that need converting.

With the what3words Coordinate Converter, you can paste up to 100 coordinates at a time, choose the format you are converting from and select the output format you need.

That can help teams prepare coordinate data for mapping tools, standardise mixed location lists or turn technical coordinates into what3words addresses.

Try the coordinate converter