Data converter · runs 100% in your browser

GeoJSON to KML Converter

Translate GeoJSON feature collections into KML for Google Earth and legacy GIS tools. Points, lines, and polygons are mapped 1:1; properties become KML <ExtendedData> attributes.

No uploadNo signupNo trackingFree, unlimited
Drop your GeoJSON file here
or click to choose a file

How to use

  1. Drop your GeoJSON file (or click to browse).
  2. The converter parses the file locally in your browser.
  3. KML output is built in memory and offered for download.
  4. Click Download to save the KML file.

FAQ

Does my data file upload to a server?

No. Conversion runs entirely in your browser using WebAssembly and Web APIs. Open the Network tab in DevTools while you convert — you'll see no outbound traffic carrying your file.

Is this really free?

Yes. No signup, no quota, no upgrade tier. The conversion runs on your machine, so it costs us nothing to host.

Is there a file size limit?

Browser memory is the only ceiling. On a modern desktop browser, a few hundred megabytes works fine. Mobile devices have tighter limits.

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