Convert GDB to KML online
Convert ESRI File Geodatabase (.gdb) — the ArcGIS folder-based database that holds several feature classes at once — into Keyhole Markup Language (KML), which is the Google Earth and Google Maps format. Drop your GDB file below, KML is already selected as the output, and download the result. Everything runs in your browser and the cloud; you never install anything.
Upload your file
Drag and drop it into the converter below. A free account comes with three welcome conversions.
Convert in the cloud
MapGO detects the format and produces your download in seconds.
Download & keep it
Files are deleted automatically after 48 hours.
Files are deleted automatically after 48 hours. Your files are never shared.
Why convert GDB to KML with MapGO?
Most online converters take one file and hand back one file. MapGO is built on a real geospatial engine, so a single upload can do more.
- Several outputs in one upload
Tick KML and any other formats you need; every selected format is delivered from the same file.
- Files up to 5 GB
Far beyond the browser-based converters that choke past a few hundred megabytes.
- Reproject while you convert
Set a source and target EPSG code and the coordinate system is changed during the conversion, no second tool needed.
- Private by default
Files are deleted automatically after 48 hours.
GDB vs KML at a glance
| GDB | KML | |
|---|---|---|
| Typical use | ArcGIS Pro projects and data deliveries from ESRI users | Google Earth / Google My Maps visualisation and sharing placemarks |
| Size on disk | Efficient binary tables inside a .gdb folder | Verbose XML; the zipped KMZ variant shrinks it considerably |
| Attribute support | Rich types, long field names, many layers per database | Styling-first — data lives in ExtendedData and is easy to lose |
| Software support | ArcGIS Pro, QGIS and GDAL-based tools | Google Earth/Maps and most GIS tools |
| Web-friendliness | Needs conversion for web maps | Good inside the Google ecosystem; niche elsewhere |
Other ways to convert GDB to KML
You don't need an online tool for this. If you have GDAL installed, one command does it.
In QGIS (free): open your GDB via Layer → Add Layer, then right-click the layer → Export → Save Features As… and pick KML as the format.
The MapGO converter above is for when you don't want to install anything, need to convert to several formats at once, or are handling files too large for a desktop machine.
ogr2ogr -f "KML" output.kml input.gdbGDB to KML: frequently asked questions
Is the GDB to KML converter free?
Partly. Every new account gets three welcome conversions for free, so you can try GDB to KML without paying. After that, you can either buy a credit pack and pay per conversion, or take a subscription, which gives you unlimited conversions within the plan's file-size limit. There is nothing to install; the whole conversion runs in the cloud.
Is my data kept private?
Conversion is fully automated and your file is never shared. Files are deleted automatically after 48 hours. Download your KML result and it's yours to keep.
What does the KML output contain?
You get a clean Keyhole Markup Language (KML) file with your geometry and attributes preserved, ready to open in the tools that read KML.
My geodatabase has several layers — which one is converted?
The layer with the most features. The others are listed by name in a note on the finished conversion, so nothing disappears unnoticed; export them to their own files to convert them too. Zip the whole .gdb folder before uploading (zipping just its contents also works).
Will my layer styling show up in Google Earth?
Geometry and attributes convert; symbology does not, because every format stores styling differently. Google Earth applies its default placemark style — restyle inside Google Earth after opening the file.
Also convert
See it on the map first.
Open your GDB in the workspace, check the shapes and attributes, then convert and download from the same place.