00geo

GeoJSON

GeoJSON expresses geographic features as JSON, with a geometry and a free-form properties object per feature. It is the native format of Leaflet, Mapbox, QGIS and most web mapping, and always uses WGS84 longitude/latitude order.

Extensions: .geojson .json
MIME type: application/geo+json

01 Convert GeoJSON to something else

GeoJSON to GPX Points become waypoints, lines become tracks or routes.
GeoJSON to KML Properties become ExtendedData, so nothing is dropped.
GeoJSON to CSV Properties become columns; geometry becomes coordinates.

02 Convert something else to GeoJSON

GPX to GeoJSON Keeps the per-point timestamps KML throws away.
KML to GeoJSON ExtendedData becomes properties. Layer order preserved.
CSV to GeoJSON Finds your coordinate columns. Refuses to guess at DMS.

03 Related formats

Opening a .geojson file

If you landed here because something handed you a .geojson file and nothing on your machine will open it, converting it to a format you already have a reader for is usually faster than installing new software. Every conversion above runs in this browser — the file is not uploaded, so it works on a locked-down work machine and on a file you are not allowed to send anywhere.