Transform coordinates

Geographical coordinates specify where something is located on Earth, and thus where to find it on a map. A coordinate system defines the exact method of encoding a physical location into coordinates. Common map coordinate systems are based on a combination of longitude and latitude, but there are other standards as well. Our service lets you search these systems and convert coordinates from one to another.

When you need it

Although most web maps and services today use the Mercator coordinate system, geodata can come in many other flavors. If you have data in a different system, you’ll need to transform the coordinates to Mercator first – this is required for example by our geocoding and IP geolocation services.

These are the most typical scenarios when you need to convert coordinates:

  • Transform data for a tool or task that requires the standard Mercator system
  • Unify data collected from various national coordinate systems
  • Merge multiple datasets from different projections

How it works

Our coordinates service is powered by an open-source database of geographic coordinate systems used in maps worldwide. That makes it possible to provide programmatic access to more than 10,000 coordinate systems, from simple search to batch-converting data between them.

How to use

The coordinate systems service is available via the Coordinates API. The API page explains basic integration options and lists the API reference. Examples of how to use the API are here: