Will my polygon coordinates lose accuracy during conversion to KMZ?

GIS

GEOJSON → KMZ

Need the other direction? KMZ → GEOJSON →

Learn about the formats: What is GEOJSON? What is KMZ?

Convert your spatial data from GEOJSON to KMZ instantly. This tool is essential for GIS specialists and field researchers who need Google Earth compatible files.

GEOJSON is a JSON-based format structured for representing geographic features with attributes, commonly used in web mapping. KMZ is the zipped, compressed version of KML designed specifically for Google Earth and mobile mapping applications. When converting GEOJSON to KMZ, your vector geometries, coordinates, and associated attribute data are repackaged into an archive format optimized for visualization in Google ecosystem tools.

The conversion between GEOJSON and KMZ is completely lossless regarding spatial data. All coordinates and geometries retain their original precision, and the resulting file size changes only insignificantly.

Tips

Ensure your GEOJSON uses standard WGS 84 coordinates before starting the conversion.
Check that attribute properties in your GEOJSON do not contain unsupported nested arrays that might break KML schema rendering.
Keep track of complex multi-polygon geometries to verify they display correctly inside Google Earth after conversion.

Common use cases

Importing web-developed vector data and geographic boundaries directly into Google Earth Pro for visual presentations.
Sharing geographic datasets with non-GIS stakeholders who rely on KMZ viewers.
Preparing spatial features created in web mapping libraries for field data collection on mobile devices.

Why ConvertX stays free — forever

We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.

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Free tools today — and always

Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.

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Privacy-first processing

Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.