Convert GML to GeoJSON
Convert GML (.gml) to GeoJSON (.geojson, .json) online for free. Fast, accurate geospatial format conversion with CRS reprojection.
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.
About GeoJSON
GeoJSON is an open standard format for encoding geographic data structures using JSON. It supports points, lines, polygons, and multi-part geometries along with feature properties.
How to Convert GML to GeoJSON
- Upload your GML file (.gml)
- Review detected layers, features, and coordinate system
- Select GeoJSON as your output format
- Choose a target coordinate reference system (optional)
- Click Convert and download your GeoJSON file
Frequently Asked Questions
Upload your GML file to ConvertGeoData, review the detected data, select GeoJSON as the output format, and click Convert. Your converted file will be ready to download in seconds.
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.
Yes. ConvertGeoData automatically detects your source CRS and lets you reproject to any EPSG coordinate reference system during conversion.
GeoJSON files can be opened with QGIS, Mapbox, Leaflet, OpenLayers and more.
GeoJSON requires EPSG:4326. ConvertGeoData automatically reprojects your data to the correct CRS.