What you see
- Summary: distance, total ascent, moving time, average and normalized power, and training stress (set your FTP for an accurate TSS).
- Elevation profile: scrub along it to see grade, power and vertical ascent speed at each point.
- Climbs: every sustained climb (at least 500 m at 3% or more) with its length, average grade and VAM.
Indoor rides often have no elevation and sometimes no distance; the viewer still shows power and TSS. Files from devices without a power meter show the ride without power.
Getting your file out
Leaving a platform or keeping your own copies? Our guides walk through it: exporting from Garmin Connect and exporting your rides from Strava.
Want to keep your rides together? A free WattsUP account puts every ride, indoor and outdoor, on one training-load curve.
Frequently asked questions
How do I open a FIT file?
Drop it on this page. The file is read in your browser and you see the distance, climbing, moving time, power, normalized power, TSS and climbs straight away. No software to install and no account.
Is my FIT file uploaded anywhere?
No. The viewer runs in your browser and reads the file on your device. Nothing is sent to a server, which also means it works with rides you would rather keep private.
Where do I get the FIT file for a ride?
In Garmin Connect on the web, open the activity, click the gear icon and choose Export Original. In Strava, open the activity, click the three dots and choose Export Original. Wahoo, Hammerhead and COROS apps can share or export the .fit file for each workout. The viewer also accepts .zip and .fit.gz files, so you don’t need to unzip them first.
What is a FIT file?
FIT (Flexible and Interoperable Data Transfer) is the compact binary format Garmin created for activity data. Most bike computers and trainer apps save rides as .fit: second-by-second time, distance, GPS position, altitude, heart rate, cadence and power.
Can I view GPX and TCX files too?
Yes. GPX and TCX files work the same way. GPX files only include power if the device or app added it as an extension, so some GPX files show distance and climbing without power.