Garmin Flexible and Interoperable Data Transfer File

Summary

Name

Garmin Flexible and Interoperable Data Transfer File

Identifiers

PUID: fmt/1651

Format type

Text (Unstructured)

Description

A file format developed by Garmin, for the storing and sharing of data from sports and health devices. Data is collected during a sporting activity, stored on the Garmin device, and can then be uploaded to the Garmin Connect web service, and other web applications. The format ensures that any .fit compliant device can interpret data from another .fit compliant device. The format allows users to track and compare data about their physical activities over time.

Note

Specification: https://developer.garmin.com/fit/protocol/

File extensions

fit

Source

Digital Preservation Department / The National Archives

Developed by

Garmin / Garmin

Supported by

Garmin / Garmin

Internal signatures

Changelog

• Updated in V121

  Release date

  24 September 2025

  Garmin Flexible and Interoperable Data Transfer File: Amended offset from 9 to 8 and changed signature from 464954 to 2E464954. Submitted by Digital Preservation Department, The National Archives (UK).

• Updated in V115

  Release date

  15 November 2023

  Garmin Flexible and Interoperable Data Transfer file: Max-offset modified for the BOF signature to allow for more exact signature identification. Submitted by Digital Preservation Department, The National Archives (UK).

• Added in V105

  Release date

  29 June 2022

  Garmin Flexible and Interoperable Data Transfer file: Signature researched and samples provided by Digital Preservation Department, The National Archives (UK).

  Garmin Flexible and Interoperable Data Transfer file: Full entry added. Submitted by Digital Preservation Department, The National Archives (UK).