KML to GeoJSON

KML is the format of Google Earth and Google Maps, GeoJSON the standard format of web maps (Leaflet, Mapbox, OpenLayers) and developer tools. If you want to take placemarks or routes from Google Earth into a web app, an analysis script or a database, you need them as GeoJSON. This tool reads your KML file and writes a clean GeoJSON FeatureCollection.

All common geometries are recognised: points (Point), lines (LineString), areas with holes (Polygon) and compound geometries (MultiGeometry), which become MultiPoint, MultiLineString, MultiPolygon or a GeometryCollection as appropriate. Placemarks in nested folders (Folder) are collected too. The name and description of each placemark go into the GeoJSON properties (properties.name, properties.description). The coordinate order stays longitude then latitude.

Everything runs entirely locally in the browser - your possibly sensitive location data never leaves your device. Honestly framed: geometry plus name and description are carried over. KML-specific presentation (custom styles, icons, tours, NetworkLinks, ground overlays) is not mapped into GeoJSON, since GeoJSON has no counterpart for it. A KML file without placemarks, or an invalid file, is rejected with a clear message instead of faking an empty output.

Specifications

In 3 steps

1. Drop your KML file.
2. The conversion runs automatically.
3. Download the GeoJSON.

Limitations: Converts KML into a GeoJSON FeatureCollection: Point, LineString, Polygon with holes and MultiGeometry (to multi types or a GeometryCollection). Placemarks from nested folders are collected; name/description become properties. KML styling, tours, NetworkLinks and overlays are not carried over (no GeoJSON counterpart). Coordinates WGS84 (longitude, latitude). A file without placemarks or invalid KML is rejected with an error.

FAQ

Related tools

GeoJSON to KML · DXF to GeoJSON · JSON to YAML · CSV to GeoJSON · GPX to GeoJSON · GeoJSON to GPX · Shapefile to GeoJSON