FitFileLab

Convert FIT to TCX

Convert your Flexible and Interoperable Data Transfer (.fit) files to TCX (.tcx) for free, directly in your browser. No upload, no sign-up — your activity data never leaves your device.

How to convert FIT to TCX

  1. 1

    Select your FIT file

    Drag and drop your .fit file onto the converter, or click to browse your device.

  2. 2

    Convert to TCX

    The file is parsed instantly in your browser and converted to the TCX format. Choose TCX as the target.

  3. 3

    Download the TCX file

    Click download to save your new .tcx file. Nothing is ever uploaded to a server.

Why convert FIT to TCX?

Convert to TCX when you want to use your activity with Garmin Training Center, TrainingPeaks and older Garmin tools. FitFileLab keeps your GPS track, timestamps, elevation and available sensor data (heart rate, cadence, power) whenever the TCX format supports them.

Frequently asked questions

Is the FIT to TCX converter free?
Yes. FitFileLab is completely free with no account, no email and no file-size limit.
Are my files uploaded to a server?
No. All conversion happens locally in your browser using JavaScript. Your files never leave your device, which is faster and fully private.
Will I lose data when converting FIT to TCX?
FitFileLab preserves the GPS track, timestamps, elevation and available sensor data (heart rate, cadence, power) wherever the TCX format supports them.
What can I do with a TCX file?
TCX files are used by Garmin Training Center, TrainingPeaks and older Garmin tools.
Can I convert TCX back to FIT?
Yes — FitFileLab also converts TCX to FIT and between every other combination of GPX, FIT and TCX.

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