FIT File Viewer
Visualize your workout data instantly. View maps, charts, and detailed file structures directly in your browser.
Open FIT File
Drag & drop or click to browse
Visualize Routes
Instantly view your GPS tracks on an interactive map. See exactly where you ran, cycled, or hiked without uploading to a third-party platform.
Analyze Metrics
Deep dive into heart rate, speed, cadence, power, and elevation data. Our charts help you spot trends and analyze performance.
Debug Files
Inspect raw FIT file structure including device settings, event messages, and developer fields. Perfect for troubleshooting corrupted files.
What is a FIT File Viewer?
A FIT (Flexible and Interoperable Data Transfer) file viewer is a tool that allows you to open, read, and visualize the binary data stored in .fit files. These files are commonly created by fitness devices like Garmin watches, bike computers, and heart rate monitors to record workout activities.
Why use a local viewer?
Most platforms require you to upload your data to their servers to view it. Our local viewer processes everything in your browser, ensuring your location data and health metrics remain completely private on your device.
What data can I see?
You can view global stats (distance, time, calories), time-series data (heart rate, speed graphs), GPS tracks, lap summaries, and even hardware diagnostics like battery voltage and sensor connection status.
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.