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This is the homepage of the documentation for the "Free maps for Garmin brand GPS devices" service based upon OpenStreetMap data.

The manual is here.


The goal of this website is to advance the OpenStreetMap project by providing free worldwide Garmin maps based upon OpenStreetMap data. I hope that people who appreciate this website will choose to contribute to the OpenStreetMap project to improve their own experience and make the opensource world map even better.

The maps are meant to be generic and will probably provide best routing results for car-drivers, however other routing options should work reasonably well too.

This website generates four different configurations of your personal free Garmin map:

  • Installer for Garmin BaseCamp/MapSource (Windows).
  • Map for the Mac OS X version of Garmin BaseCamp.
  • Combined image for direct manual placement on the GPS device (gmapsupp.img)
  • A zip file just containing all the Garmin map tiles as selected on this website. This is useful for Linux users (e.g. Qlandkarte)

Once you've selected the map tiles, filled out the form and clicked the 'Build maps' button, your request is queued on the server. The server processes each request in four steps:

  1. Running Mkgmap to combine the requested tiles into a gmapsupp.img.
  2. Using Nullsoft Scriptable Installer to combine the requested tiles into a Windows MapSource installer. The script used for this build is also included: 'map.nsi'.
  3. Use the command line version of JaVaWa MapConverter to create a version of the map compatible with BaseCamp for Mac OS X.
  4. Finally, an e-mail is then sent to you when all this is done.

To complete your request please browse to the website listed in the e-mail and download the map configuration(s) you're interested in.

The routable Garmin maps are created using the opensource tools Splitter and Mkgmap originally created by OSM user Steve Ratcliffe. Splitter accepts raw OpenStreetMap data and splits it into workable areas which then are converted into Garmin maps by Mkgmap. Splitter creates a template file which lists the coordinates and availability of the tiles. This template file is used by this website to show the Garmin tiles on the world map (the blue squares).

The Openfietsmap is a routable map for bicycle touring. The cartography is licensed under the cc by-nc-sa license. You are free to use and share the map for non-commercial purposes.

Frequently Asked Questions

See this topic on the osm forum and questions about on the help site.

I installed the map in MapSource or Basecamp but don't see anything!

Try the following:

- Make sure you selected the map in the pull-down menu (when a pull-down menu is shown).
- If no pull-down menu is shown (this happens if only one map is installed) select the map in the menu View->Switch to product
- Clear the map cache by pressing the ctrl G key combination a few times.
- Mostly the maps cover only a small part of the world and is easilly overlooked. Press the ctrl - key combination (control key together with minus key).

I installed a second map from in MapSource/BaseCamp/RoadTrip and don't see the first map anymore

The maps from use a single product ID so installing a second map overwrites the first map. Solution: download the application JaVaWa GMTK and use that to change the product ID of the first map before installing the second map.

I want to put another map from on the device, can I rename the gmapsupp.img?

This depends on your unit. On the newer generation Garmin GPS receivers several mapsets can be installed, simply rename the default gmapsupp.img to anything suitable (as long as the extension remains *.img). With the application JaVaWa Device Manager the mapset name and description can be set to distinguish all different mapsets on the unit. It can also used to check if the maps are properly placed on the SD card and if there are no overlapping tiles, which can cause problems.

I've received the 'Your Garmin map request: Ready' email but it doesn't contain an URL for the map

The cause isn't very clear but it is suspected that some email providers remove URL to different domains then the sender domain from the email (anti-phising). So please request the map again using an email address from a different email provider. Currently email providers like Google Mail, Microsoft Live (hotmail), Yahoo should work fine.

I requested a large map and the Windows installer is missing!

The Windows installer cannot be larger then 2GB. This is a limitation of the NSIS installer and the process used to create the installer.
You'll have to choose a smaller map if you really need the Windows installer or you can use = Installer for Garmin BaseCamp/RoadTrip (Mac OSX)
Unzip it and place the .gmap folder to the default Garmin map folder. The location of this folder depends on the Windows version.
In Vista or W7 this is: C:\ProgramData\GARMIN\Maps or C:\Users{user}\AppData\Roaming\GARMIN\Maps (please note this is a hidden folder!)
Windows XP: c:\documents and settings\all users\application data\garmin\maps
Or you can use to install the gmap maps.

My virusscanner complains about the large file while downloading the _windows.exe

It often happens that anti-virus software is a bit wary for very large .exe files. In this case I can assure you there are no virusses included. So in this case it is probably best to disable the virus scanner while downloading the file. When you've completely downloaded the file then restart your virusscanner and, if you want, scan the downloaded file for virusses (you should not trust me or anyone else on the internet! :p). The scan will show that the download is clean and you should be able to run the .exe to install the map on your pc.

Downloading the _windows.exe using Internet Explorer 9 gives the warming/error "This program is not commonly downloaded and could harm your computer"

This message comes from the browser because the .exe is not signed using a technique called Authenticode. You can safely ignore this message: Click the Actions button in the displayed message. In the SmartScreen Filter dialog box, click the down arrow to the left of More options, and click 'Run anyway'. You should now be able to run the .exe. to install the map on your pc.

Generic map


Openfietsmap Lite

For instructions how to use Openfietsmap Lite see Tips & Tricks on the website (ignore the installation part, because this concerns the Openfietsmap Benelux maps)


Generic map


Generic - no stylesheet - night.png Generic - no stylesheet - day.png Generic - mapnik stylesheet - night.png Generic - mapnik stylesheet - day.png
Night mode (No TYP) Daylight mode (No TYP) Night mode (Mapnik TYP) Daylight mode (Mapnik TYP)


Generic mapnik stylesheet.jpg


Mapsource generic no stylesheet.png Mapsource generic mapnik stylesheet.png
No TYP Mapnik TYP

Openfietsmap Lite

For an explanation of the map symbols, see the OFM Map Legend


OFM Lite2300.png OFM lite2185.png OFM lite936.png OFM lite1093.png OFM lite485.png


Openfietsmap lite.jpg


Mapsource openfietsmap lite.png