TCX Files: Structured Workouts with Broad Compatibility
A human-readable alternative to FIT used across Garmin, Polar, and Strava
Articles
Product updates, roadmap notes, and tips for converting and repairing your fitness files.
How to Convert Garmin FIT files to GPX
Convert Garmin FIT files to the universal GPX format for use with mapping tools and other platforms
How to Convert TCX to GPX
Turn your TCX workout files into GPX for use with mapping and navigation tools
ZWO Files: How Zwift Knows What Workout You’re Doing
The format behind interval training, power targets, and indoor plans
How to Convert Garmin FIT files to TCX
Convert Garmin FIT files to TCX for compatibility with training platforms and manual editing
GPX Files: The Universal Language of GPS Routes
How GPX became the go-to format for sharing maps, tracks, and outdoor activities
KML Files and Fitness Data: Built for Maps, Not Metrics
How KML turns workouts into visual experiences in Google Earth and Maps