TopoJSON is an efficient format for storing geographic data and shared boundaries, but GeoJSON is supported more widely by mapping libraries, applications, and GIS tools.

Our converter transforms TopoJSON objects and their topology into GeoJSON features while retaining the geographic properties contained in your data.

The converted GeoJSON can be used with popular mapping libraries such as Leaflet and other tools that support the GeoJSON format.

Whether you need to convert data for a web map, inspect geographic features, or use TopoJSON data in an application that expects GeoJSON, this tool provides a simple way to perform the conversion directly in your browser.

Upload your TopoJSON file, or paste the data into the converter, and download or copy the resulting GeoJSON.

Transform, convert, and manage geographic data with a powerful API built for modern mapping applications. Convert coordinates between WGS84, UTM, MGRS, Decimal Degrees, Decimal Minutes, and PlusCodes with reliable, accurate results.

Go beyond coordinate conversion with geocoding and reverse geocoding, while seamlessly transforming spatial data between formats such as GeoJSON and TopoJSON. Build faster, smarter geospatial applications.