Format comparison
KML vs GML: Two XML Formats Compared
Both KML and GML are XML-based geospatial formats, but they serve completely different purposes. KML is Google's format for Earth visualization with rich styling. GML is the OGC's data exchange standard used by government web services and standards-compliant systems.
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Bottom line
Use KML for Google Earth visualization. Use GML when working with OGC WFS services or government INSPIRE datasets.
KML vs GML: feature comparison
| Feature | KML | GML |
|---|---|---|
| Standard body | Google / OGC (KML 2.3) | OGC GML 3.x |
| Primary use | Visualization (Google Earth) | Data exchange (WFS services) |
| Styling | Rich inline styles | None (SLD externally) |
| Schema validation | Limited | Strict XSD |
| 3D support | Yes (altitude, extrusion) | Yes (3D geometry) |
| CRS support | WGS 84 only | Any CRS |
KMLWhen to use KML
- Google Earth / Google Maps visualization
- Maps with rich styling, icons, and 3D
- Sharing with non-GIS users
GMLWhen to use GML
- OGC WFS service output
- Government data portals and INSPIRE datasets
- Schema-validated data exchange
Convert between KML and GML
Frequently asked questions
Q.Are KML and GML related?
Both are XML-based and both have OGC involvement, but they are distinct formats with different schemas and use cases. Converting between them requires a tool like GDAL or Maparz.
Q.Can I convert KML to GML online?
Yes. Maparz converts KML to GML — upload your .kml and download a .gml file.