FIT Telemetry Overlay
Universal fitness data format from Garmin and ANT+
FIT (Flexible and Interoperable Data Transfer) is Garmin's binary format used by cycling computers, watches, and fitness devices. StintBox parses FIT files natively for rich overlay data.
Download FreeSupported data channels
How it works
Export your FIT file
Download the .FIT file from Garmin Connect, Wahoo app, or copy it directly from your device.
Import into StintBox
Drag the FIT file into StintBox alongside your video. All data channels are auto-parsed.
Add performance widgets
Overlay heart rate zones, power graphs, cadence, speed, and a GPS track map.
Export your video
Render and share your overlay video on any platform.
Recommended widgets
Frequently asked questions
FIT files contain more data channels at higher resolution. Use FIT when available, since it preserves heart rate, power, cadence, and temperature more reliably than GPX.
Garmin (Edge, Forerunner, Fenix), Wahoo ELEMNT, Hammerhead Karoo, Stages, and many ANT+ devices. Most modern cycling computers use FIT as their native format.
Ready to overlay your data?
Download StintBox free and add telemetry to your videos in minutes.
Download FreeWindows, macOS and Linux. No account required.