What is a .FIT file?
FIT records a workout - GPS track, heart rate and more. Created by Garmin devices.
- Did you know
- Garmin’s FIT format is the standard for fitness watches and bike computers.
- FIT stands for Flexible and Interoperable Data Transfer, a compact binary protocol specified by ANT.
- A FIT file is built from message templates, letting one format store activities, workouts, courses and user profiles alike.
- What Analyser reads
- Open scientific, medical and engineering files: DICOM scans, NIfTI brain volumes, Garmin FIT/TCX activities, FITS astronomy frames, FASTA/FASTQ sequences, chemistry structures (MOL/SDF/MOL2/CIF/XYZ), Gerber/Excellon PCB data, SPICE netlists, EDF/BDF biosignals, JCAMP-DX spectra, SPSS/Stata/SAS datasets and VTK/ParaView meshes - metadata extracted entirely in-browser.
- Depth of analysis
- .FIT is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .FIT file
- Drag a .FIT file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.