GPX to FIT Converter
Convert GPX routes to FIT format with customizable speed settings for Garmin devices
Your Data is Secure
Your data is processed securely on our servers and is never stored. The conversion happens instantly and all files are deleted immediately after processing.
How GPX to FIT Conversion Works
Learn more about the converter and its creator

Jonas
I'm a software developer and sports enthusiast. I created these converters to help athletes manage their workout data efficiently.
Understanding GPX to FIT Conversion
Converting GPX (GPS Exchange Format) files to FIT (Flexible and Interoperable Data Transfer) format allows you to import route data into modern fitness devices and platforms. This converter helps you transform static GPS routes into activity-based FIT files that can be used with Garmin devices and other fitness platforms.
How It Works
The conversion process involves several steps:
- Reading the GPX file and extracting GPS coordinates
- Calculating distances between points
- Applying the specified average speed to generate timing data
- Creating a properly formatted FIT file with all required fields
- Adding necessary metadata for device compatibility
Speed Settings
Since GPX files typically don't contain speed information, you'll need to specify an average speed for the activity. This is important because:
- FIT files require timing data for each point
- Speed helps calculate realistic timestamps
- Proper timing data makes the activity more realistic
- Accurate speed improves compatibility with fitness platforms
Data Conversion Details
The converter preserves and generates the following data:
- GPS coordinates (latitude and longitude)
- Elevation data (if available in GPX)
- Calculated speed based on your input
- Distance calculations between points
- Generated timestamps for each point
- Activity type metadata
Common Use Cases
This conversion is particularly useful for:
- Converting planned routes to FIT activities
- Importing routes into Garmin devices
- Creating structured workouts from routes
- Sharing routes in a format compatible with fitness platforms
- Converting historical GPS data to modern formats
Pro Tip
When choosing an average speed, consider the terrain and typical speeds for your activity type. For cycling on flat terrain, 20-25 km/h might be realistic, while for running, 10-12 km/h is more typical.