OSM map: get KML instead of converting GML → KML
Looking to turn a map from GML into KML? If your data comes from OpenStreetMap, you do not need an intermediate GML file: osm2cdr builds the map straight from the OSM source and hands you a ready KML. That is faster and more accurate than the chain "download GML → upload to a converter → get KML": you pick an area on the map, choose the KML format and download the result with up-to-date OSM data and layers for buildings, roads, water and features.
How GML differs from KML
| Format | Extension | Type | Purpose |
|---|---|---|---|
| GML | .gml | GIS | GIS data exchange, WFS services, government GIS standards, INSPIRE |
| KML | .kml | GIS | Viewing in Google Earth, geodata sharing, creating tourist routes, presentations |
How to get KML on osm2cdr
- 1Select an area on the map on the osm2cdr home page
- 2Choose the KML format and, if needed, a style and CRS
- 3Click Export and download the ready KML file
KML format properties
| Extension | .kml |
| Type | GIS |
| Purpose | Viewing in Google Earth, geodata sharing, creating tourist routes, presentations |
When you need KML
The KML format is handy when you need to open the result in a dedicated program and keep working with the map: editing, printing, analysing or embedding it in a project. osm2cdr delivers KML split into layers with up-to-date OpenStreetMap data, so the file is ready to use right after download.
What changes when going GML → KML
Going GML → KML preserves both geometry and attributes; only the container model changes — a single file versus a set, the supported field types and the format limits. Such a switch is usually made for compatibility with a specific tool. osm2cdr delivers KML straight from OpenStreetMap data, with no intermediate GML file.
If you have your own GML file (not from OSM)
osm2cdr does not accept or convert third-party GML files: the service works only with OpenStreetMap data. If you already have your own GML file that is not from OSM, convert it to KML with third-party tools: GDAL/ogr2ogr from the command line or QGIS — open the GML and save the layer as KML. It is free and runs locally, with no cloud upload.
FAQ: GML → KML
Can I upload my GML file?
Not yet: we don't support uploading GML files at the moment, so convert your file to KML with ogr2ogr or QGIS. And if your data comes from OpenStreetMap, you don't need a file at all — osm2cdr exports the map straight into KML.
Is it free?
Yes, exporting an OpenStreetMap map to KML on osm2cdr is free. Select an area, the KML format and download the result.
Which programs open KML?
The KML format opens in dedicated programs for its category. See the KML format page for the full list and details.
Why is this better than an online GML → KML converter?
An online converter caps the result quality at the quality of the source GML file. osm2cdr takes data from the OpenStreetMap source and builds KML with correct layers directly — with no loss on an intermediate GML file.