FIT Converter

Convert FIT files online for free


Drop or upload your .FIT file
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How to convert your FIT file

  1. Click the "Select File" button above, and choose your FIT file.
  2. You'll see a preview.
  3. Click the "Convert file to..." button to save your file in the format you want.

Convert FIT to another file type

The converter easily converts your FIT file to various formats - free and online. No ArcGIS or extra software needed.

  • FIT to GPX
  • FIT to MTR
  • FIT to CSV
  • FIT to TCX
  • FIT to KML
  • FIT to SHP
  • FIT to KMZ
  • FIT to GEOJSON
  • FIT to TOPOJSON
  • FIT to TIF
  • FIT to TIFF
  • FIT to ECW

Convert a file to FIT

The converter also works in reverse, so you can convert other Data formats to FIT with high quality output.

  • LAZ to FIT
  • KMZ to FIT
  • DTM to FIT
  • CSV to FIT
  • DEM to FIT
  • PRJ to FIT
  • LAS to FIT
  • GPX to FIT
  • DSM to FIT
  • SHP to FIT
  • DBF to FIT
  • KML to FIT

About FIT files

The .FIT extension most commonly refers to the Flexible and Interoperable Data Transfer file, a highly compact binary format engineered by Garmin to store complex fitness data, including GPS coordinates, heart rate variability, and power meter metrics. While efficient for embedded devices, the format's binary nature makes it impossible to read with standard text editors and limits direct access to your data without specific proprietary software. Users frequently face compatibility hurdles when moving data between ecosystems (e.g., from a Garmin watch to Apple Health or a custom database). To overcome this, the best practice is converting .FIT to GPX or TCX for universal import into platforms like Strava and TrainingPeaks, or to CSV for detailed performance analysis in Microsoft Excel.

Alternatively, in scientific contexts, .FIT represents the Flexible Image Transport System (FITS) used by astronomers to store photometric data. These files often appear blank or corrupt in standard photo viewers due to their high dynamic range and specialized headers. For these files, converting to TIFF preserves data integrity for archiving, while JPG or PNG is recommended for easy web viewing and sharing.

Convert.Guru analyzes your FIT file, detects the exact format, and lets you read the text inside.

Users also converted TCX, CSV, GPX, FITS, ZIP, GZ, ERG, PROD-1, 1200-FIT, TXT, MRC, KML and XLSX files.



The FIT Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our FIT converter.