Garmin FIT Python SDK

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library 21.202.0 ·python
verified May 1, 2026

A Python library for reading and writing FIT (Flexible and Interoperable Data Transfer) files, widely used in Garmin devices and fitness applications. The SDK provides classes to decode FIT files into messages and fields, and to encode custom FIT files. Current version is 21.202.0, with a release cadence that follows Garmin's FIT SDK releases (usually quarterly).

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