Convert KMZ files to KML, online and free. GISConverter reads your KMZ data locally in the browser and writes a KML file so you can open and view it in Google Earth or Google Maps — nothing is uploaded, and your data never leaves your computer.
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KML, KMZ, SHP (.zip), GeoJSON, GPKG, GML, GPX, DXF, GeoTIFF, and more
KMZ is a vector GIS format, so it isn't always the format the next tool expects. Converting it to KML lets you open and view it in Google Earth or Google Maps without redrawing or re-collecting anything. Because GISConverter runs a full GDAL engine in your browser, the geometry and attributes carry across faithfully, and the file never leaves your device.
KMZ (.kmz): A KMZ file is simply a KML document compressed into a ZIP archive, optionally bundling icons, images and overlays alongside it. It is smaller than raw KML and is the format Google Earth exports by default, which makes it the usual way to hand a finished map to someone else.
KML (.kml): KML is the XML-based format Google Earth and Google Maps use to describe points, lines, polygons, labels and styling. Because it is plain text it is easy to read, edit and share, and it stores coordinates in WGS84 longitude/latitude by default.
Yes. GISConverter is completely free and runs in your browser — no signup, no watermark, and no daily limit.
No. Your KMZ file is read and converted locally on your device with a GDAL engine compiled to WebAssembly, so it never leaves your computer.
KML is the XML-based format Google Earth and Google Maps use to describe points, lines, polygons, labels and styling.
A KMZ file is simply a KML document compressed into a ZIP archive, optionally bundling icons, images and overlays alongside it.
Yes. Output defaults to EPSG:4326 (WGS84 longitude/latitude). Enter any EPSG code, such as EPSG:3857, in the coordinate-system box to reproject on the way out.
