KML to GeoJSON Converter
Turn Google Earth placemarks and paths into GeoJSON for Mapbox, Leaflet or any modern web map. The conversion runs locally, no upload involved.
Your files never leave this tab
There is no upload. Files are read by the code already running on this page, processed in memory, and handed straight back to you as a download. This tool has no server that accepts your data and nothing is written to storage.
Want proof? Turn off your Wi-Fi, then convert. It still works, because the work happens on your device.
- 0 bytes sent
- No account
- No storage
- Works offline after loading
Local memory processing
Professional Utility
One free file per batch · unlock unlimited for $9 once · no account
Why convert KML to GeoJSON
KML is Google Earth's native format, but almost no JavaScript mapping library reads it directly. This rewrites the same geometry as GeoJSON, which is what libraries like Mapbox GL and Leaflet expect out of the box.
Curious how the conversion itself works with nothing ever uploaded? Read how TrailConvert works.
Frequently asked questions
- How do I convert KML to GeoJSON?
- Drop your KML file onto TrailConvert on this page. It's read and converted to GeoJSON directly in your browser, and the result is ready to download in a few seconds — no upload, no account.
- Is this KML to GeoJSON converter free?
- Yes. Converting one file at a time is free with no account or signup. Converting a batch of files at once requires a one-time $9 unlock.
- Does converting KML to GeoJSON upload my file to a server?
- No. The conversion runs entirely in your browser using JavaScript's File API. Your file is never sent anywhere, and TrailConvert has no upload endpoint for route files at all.