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KMZ to GeoJSON converter, without the upload.

Turn KMZ map files into GeoJSON. It is converted in your browser, so the file never leaves your device.

Drop KMZ files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

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How to convert KMZ to GeoJSON

  1. Add your KMZ map files

    Drop KMZ files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.

  2. GeoJSON is already chosen

    Press Convert. There is nothing else to set. The work happens in this tab.

  3. Download

    Save the GeoJSON, or download everything as one ZIP if you converted several files.

Why ToAny

  • Private by construction

    The KMZ to GeoJSON converter is part of this page and runs inside your browser. Your map files are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

KMZ to GeoJSON: what to expect

KMZ is a compressed archive, so text editors and many scripts cannot read it directly. GeoJSON is plain JSON that web maps and GIS software read directly. KMZ is at home in KML with its icons and overlay images in one file; GeoJSON is the usual choice for points, lines and areas on the web.

Every format is read into plain GeoJSON features and written out from there, so coordinates, names and properties carry over wherever the target has a place for them. XML that declares custom entities is refused, and KMZ files are parsed without touching the network. The KML inside the KMZ is read; icons and overlay images in the archive are not carried over. Coordinates are written longitude first, then latitude, as GeoJSON requires.

KMZ vs GeoJSON

KMZ

KMZ map file

A KMZ is a ZIP archive containing a KML file, normally named doc.kml, and the icons and images it uses. Google Earth saves a placemark collection as KMZ so that the pictures travel with it.

Opens in Google Earth, Google My Maps, QGIS and most GIS tools

KMZ converter
GEOJSON

GeoJSON map data

GeoJSON describes geographic features, points, lines and polygons, with their properties as plain JSON. It is the standard format for web maps. Coordinates are in WGS 84 and written longitude first, then latitude, the reverse of how most people say them.

Opens in QGIS, Leaflet, Mapbox, geojson.io, GitHub's map view and most GIS tools

GeoJSON converter
KMZ compared with GeoJSON
KMZKMZ map fileGEOJSONGeoJSON map data
Stands forZipped Keyhole Markup LanguageGeoJSON
TypeGeographic data (zipped)Geographic data
CompressionLossless (a ZIP containing KML)None (JSON text)
IntroducedThe mid-2000s, by Google2008, by the IETF (RFC 7946), from a community specification
Opens inGoogle Earth, Google My Maps, QGIS and most GIS toolsQGIS, Leaflet, Mapbox, geojson.io, GitHub's map view and most GIS tools
Best forKML with its icons and overlay images in one filePoints, lines and areas on the web
File extension.kmz.geojson

Questions

Are my map files uploaded anywhere?

No. The KMZ to GeoJSON conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Is anything lost when converting KMZ to GeoJSON?

The values are kept. Anything GeoJSON has no way to express, such as formatting, formulas or nesting, is simplified or left out.

Can I convert several KMZ files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert KMZ to GeoJSON on Windows, Mac, iPhone or Android?

The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the KMZ file, press Convert and save the GeoJSON. There is nothing to install.

Is there a file size limit?

Yes. Files up to 200 MB are accepted; a larger file is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.