FIT File Repair Tool
Got a corrupted FIT file? Upload it here and we'll diagnose the issues — timestamp gaps, GPS spikes, CRC errors — and fix them automatically. Your data stays in your browser.
Drag & drop your FIT files here
or click to browse — max 50 MB
FAQ
Why is my FIT file corrupted?
FIT files can become corrupted when a device runs out of battery mid-recording, during failed file transfers, or due to storage errors. Common issues include timestamp gaps, GPS spikes, and CRC checksum errors.
Can this tool fix a FIT file that Garmin Connect rejects?
In most cases, yes. This repair tool fixes the most common issues that cause upload failures: CRC errors, malformed timestamps, and GPS coordinate spikes. Upload your file to see a diagnosis before applying repairs.
What types of FIT file errors can be repaired?
This tool can fix timestamp gaps (filling or interpolating missing data points), GPS spikes (smoothing out impossible location jumps), and CRC errors (recalculating checksums). It handles the most common corruption scenarios from Garmin, Wahoo, and other devices.