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Convert GML to CSV

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

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Upload your GML file and get CSV output in seconds.

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About GML

Geography Markup Language (GML) is an OGC XML-based format for expressing geographic features. It is often used for data exchange between government agencies and in INSPIRE-compliant systems.

Extensions: .gml
Software: QGIS, ArcGIS, GeoServer, Deegree, GDAL/OGR
Limitations: Verbose XML format — large file sizes. Complex schema definitions. Slower to read/write than binary formats.

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.

How to Convert GML to CSV

  • Upload your GML file (.gml)
  • Review detected layers, features, and coordinate system
  • Select CSV as your output format
  • Choose a target coordinate reference system (optional)
  • Click Convert and download your CSV file

Frequently Asked Questions

How do I convert GML to CSV?

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

Is the GML to CSV 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 CSV files?

CSV files can be opened with Excel, Google Sheets, QGIS, Python/Pandas and more.

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No installation required. Works in your browser.

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