Repair a Garmin FIT file
Your Garmin recorded an activity but the .FIT file won't open in Garmin Connect or Strava? This free tool reads everything still recoverable, rebuilds the file structure and hands you a clean .FIT — entirely in your browser, nothing uploaded.
How to repair a Garmin FIT file
- 1
Drop the .FIT file
Drag and drop your corrupted Garmin file onto the tool, or click to browse your device.
- 2
Analyze & repair
The file is analyzed in your browser: checksum recomputed, unreadable blocks skipped, structure rebuilt.
- 3
Download the repaired .FIT
Get a clean file, ready to re-import into Garmin Connect or Strava.
Why do Garmin FIT files get corrupted?
A hard device shutdown, a flat battery mid-ride or an interrupted USB transfer often leave a truncated .FIT that Garmin Connect refuses to import. Repairing rebuilds the header and checksum so the file becomes readable again.
Frequently asked questions
- Is the Garmin FIT repair tool free?
- Yes — completely free, no account, no file-size limit.
- Is my file uploaded to a server?
- No. All repair happens locally in your browser. The file never leaves your device.
- Will I be able to re-import the file into Garmin Connect?
- In most cases yes: once the structure is repaired, Garmin Connect and Strava accept the file again.
- What if the file is too damaged?
- If no activity data can be recovered, the tool tells you clearly instead of producing an invalid file.