Free FIT File Viewer — Open & Analyze Garmin, Wahoo & COROS Files
Open FIT files directly in your browser. View GPS tracks, heart rate, power charts, and export to GPX or CSV — no upload to Garmin Connect or Strava required.
Open FIT File
Drag & drop or click to browse
View Routes on Map
Display GPS tracks on an interactive map directly in your browser. Download the route as a GPX file for use in Garmin Connect, Strava, or any other app — no upload required.
Analyze & Export Data
Explore heart rate, speed, cadence, power, and elevation charts. View FIT messages as readable tables and download any dataset as a CSV file for use in Excel or Google Sheets.
Open Corrupted FIT Files
Recover data from partially corrupted FIT files. Inspect raw FIT message structure, device settings, and developer fields, then download a fixed file ready to upload to Garmin Connect or Strava.
Frequently Asked Questions
What is a FIT file?
A FIT (Flexible and Interoperable Data Transfer) file is a binary file format used by fitness devices to store activity data. It records metrics such as GPS position, heart rate, speed, cadence, power, and elevation. FIT files are created by Garmin watches and bike computers, Wahoo devices, COROS watches, and many other sports GPS devices.
How do I open a FIT file without Garmin Connect?
Drag your .fit file onto the viewer above, or click to browse for it. All processing happens locally in your browser — no account required, and no upload to Garmin Connect, Strava, or any external server.
What data can I see in a FIT file?
You can view global activity stats (distance, time, calories), time-series charts (heart rate, speed, power, cadence, elevation), GPS tracks on an interactive map, lap and split summaries, device info and sensor data, and raw FIT message tables for all recorded data types.
Can I repair a corrupted FIT file?
Yes. The viewer can open and recover data from partially corrupted FIT files. Inspect the raw FIT message structure to identify issues, then download a fixed version of the file ready to upload to Garmin Connect or Strava.
Can I export FIT data to CSV or GPX?
Yes. Download any FIT message table as a CSV file for use in Excel or Google Sheets. You can also download the GPS route as a GPX file for use in other apps. For full format conversion, use the FIT to GPX or FIT to CSV converters linked below.
Is my FIT file data private?
Completely. All FIT file processing happens in your browser using local JavaScript. Your file is never uploaded to any server. Your GPS locations, health metrics, and workout data stay on your device at all times.
Your Privacy is Protected
Your FIT files are processed entirely in your browser. No data is ever uploaded to our servers. Your workout data, GPS locations, and health metrics stay on your device.