Add your GEOJSON file
Drop one or more .geojson files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
GEOJSON to KML
Converting a .geojson font to .kml repackages the same glyphs and metrics for a different delivery target. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop GEOJSON files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting GeoJSON to Keyhole Markup Language
Converting a .geojson font to .kml repackages the same glyphs and metrics for a different delivery target. A .geojson file encodes geographic features as JSON: geometries such as Point, LineString and Polygon, each optionally carrying a free-form properties object, usually collected in a FeatureCollection. It is the format web mapping actually runs on.
A .kml file is Keyhole Markup Language: an XML format describing geographic features together with how they should look and how a camera should view them — placemarks, paths, polygons, styles, icons and overlays. It carries presentation, which is what separates it from GPX and GeoJSON. For this route the practical draw is carries presentation, not just geometry — the only one of these three that does and an OGC standard rather than a vendor format — balanced against verbose, and mixing styling with data makes documents large, which is worth knowing before you commit a large batch.
Why convert GEOJSON to KML?
The practical trigger for this conversion is usually a mismatch: with .geojson, verbose and large for dense geometry, with no built-in compression. Switching to .kml buys you carries presentation, not just geometry — the only one of these three that does, which is why it is the better fit for displaying geographic data in Google Earth or Google Maps. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
GEOJSON vs KML at a glance
| Aspect | GeoJSON (.geojson) | Keyhole Markup Language (.kml) |
|---|---|---|
| Format type | Text-based — characters and structure, so there is no visual quality loss | Text-based — characters and structure, so there is no visual quality loss |
| How it stores data | coordinate order is longitude, latitude — the reverse of how people say it, and the single most common source of bugs | placemark elements pair a geometry with a name, description and style reference |
| Strongest at | rendering geographic data in Leaflet, Mapbox or OpenLayers | displaying geographic data in Google Earth or Google Maps |
| Weak spot | verbose and large for dense geometry, with no built-in compression | verbose, and mixing styling with data makes documents large |
| Metadata | geometry and the properties object are preserved. Styling is not part of the format, so a conversion from KML loses that presentation information rather than GeoJSON dropping it | geometry, names and descriptions are preserved. Styling, icons and camera viewpoints have no equivalent in GeoJSON or GPX and are not carried across |
Pick KML as the output
Select .kml in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if KML is selectable, the route is real and validated.
Convert on your device
Press Convert. The font tables are parsed and rewritten locally with fonteditor-core; glyph outlines, hinting, and kerning survive the trip.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid KML file. Outputs keep the original filename with the .kml extension.
GEOJSON to KML questions, answered
Will converting GEOJSON to KML lose quality?
There is no visual quality to lose — geojson is text-oriented and kml is text-oriented, so the question is structural fidelity. Text, ordering, and basic structure are preserved; complex layout, embedded objects, and styling beyond the target's model are simplified.
Is it private to convert GEOJSON files here?
Yes — the .geojson file is processed inside your browser tab and never uploaded. The font tables are parsed and rewritten locally with fonteditor-core; glyph outlines, hinting, and kerning survive the trip. Close the tab and the file is gone from memory.
Where will the KML file work?
Native to Google Earth and Google My Maps, and supported by QGIS, ArcGIS and GDAL. Web mapping libraries usually want GeoJSON instead. Novus Convert parses placemarks and geometry locally — without following NetworkLink references — and converts to GeoJSON and GPX.
Will the KML file be bigger or smaller than my GEOJSON?
It depends on the content: placemark elements pair a geometry with a name, description and style reference. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my GEOJSON file?
In .geojson, geometry and the properties object are preserved. Styling is not part of the format, so a conversion from KML loses that presentation information rather than GeoJSON dropping it. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.
Can I convert KML back to GEOJSON?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .geojson → .kml → .geojson is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.