Convert Garmin MapSource (.gdb) to GPX (.gpx)

RouteConverter opens Garmin MapSource files and saves them as GPX — free, offline, no upload required.

How to convert .gdb to .gpx

1. Open the .gdb file via File → Open.
2. Pick GPX in the Save as dropdown.
3. Choose where to save it via File → Save as.

About Garmin MapSource (.gdb)

GDB is the binary database format from Garmin's legacy MapSource desktop software, bundling waypoints, routes and tracks in one file. Written and read by MapSource and, via GPSBabel, by newer Garmin tools that need to read old MapSource archives.

About GPX (.gpx)

GPX (GPS Exchange Format) is an open XML format for waypoints, tracks and routes, with optional time, elevation and extension fields. It's the universal GPS interchange format — read and written by Garmin Connect, Google Earth, OsmAnd, Strava, komoot and nearly every GPS app or device made since 2004.

Download RouteConverter — Windows, macOS, Linux, free.

Related conversions

• CSV to GPX
• Garmin FIT to GPX
• GeoJSON to GPX

FAQ

Can RouteConverter convert .gdb to .gpx for free?

Yes. RouteConverter is free and open source. Opening a Garmin MapSource file and saving it as GPX does not require an account, a subscription, or an internet connection.

Does the file get uploaded anywhere?

No. RouteConverter runs on your own computer (Windows, macOS or Linux) and converts the file locally — nothing is sent to a server.

Can I convert .gpx back to .gdb?

Usually yes — open the GPX file and pick Garmin MapSource in the Save-as dropdown. Fields the target format cannot represent are dropped with a warning.