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Convert to FlatGeobuf

Convert KMZ to FlatGeobuf

Convert KMZ (.kmz) to FlatGeobuf (.fgb) online for free. Fast, accurate geospatial format conversion with CRS reprojection.

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Upload your KMZ file and get FlatGeobuf output in seconds.

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About KMZ

KMZ is a compressed (zipped) version of KML files. It packages the KML document along with any referenced images, icons, or overlays into a single archive.

Extensions: .kmz

Software: Google Earth, Google Maps, QGIS, ArcGIS

Limitations: Same as KML (WGS 84 only). Requires extraction to edit the underlying KML.

About FlatGeobuf

FlatGeobuf is a performant binary encoding for geographic data based on FlatBuffers. It supports streaming and random access for fast partial reads.

Extensions: .fgb

Software: QGIS, GDAL/OGR, Leaflet, OpenLayers, GeoServer

Limitations: Relatively new format with limited support in older software. Single layer per file.

How to Convert KMZ to FlatGeobuf

Upload your KMZ file (.kmz)
Review detected layers, features, and coordinate system
Select FlatGeobuf as your output format
Choose a target coordinate reference system (optional)
Click Convert and download your FlatGeobuf file

Frequently Asked Questions

How do I convert KMZ to FlatGeobuf?

Upload your KMZ file to ConvertGeoData, review the detected data, select FlatGeobuf as the output format, and click Convert. Your converted file will be ready to download in seconds.

Is the KMZ to FlatGeobuf conversion free?

Yes! ConvertGeoData offers free conversions for all users. No account required for basic conversions. Sign up for a Pro or Business plan for higher limits.

Can I change the coordinate system during conversion?

Yes. ConvertGeoData automatically detects your source CRS and lets you reproject to any EPSG coordinate reference system during conversion.

What software can open FlatGeobuf files?

FlatGeobuf files can be opened with QGIS, GDAL/OGR, Leaflet, OpenLayers and more.