Convert CSV to FlatGeobuf

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

Ready to convert?

Upload your CSV file and get FlatGeobuf output in seconds.

About CSV

Comma-Separated Values (CSV) files store tabular data with coordinate columns (latitude/longitude or WKT geometry). A simple, universal format supported by virtually all data tools.

Extensions: .csv
Software: Excel, Google Sheets, QGIS, Python/Pandas, R
Limitations: No built-in geometry type — requires coordinate columns. No CRS metadata. No support for complex geometries without WKT.

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 CSV to FlatGeobuf

  • Upload your CSV file (.csv)
  • 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 CSV to FlatGeobuf?

Upload your CSV 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 CSV 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.

Convert CSV to FlatGeobuf Now

No installation required. Works in your browser.

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