TCX to FIT Converter
Convert Training Center XML files to FIT format
This speed will be used for trackpoints that don't have speed data in the TCX file.
Your Data is Secure
All file conversions happen directly in your browser. We never upload, store, or save your files on any server. Your data remains completely private and secure.
How to Convert TCX to FIT
Follow these simple steps to convert your files quickly and easily
Upload Your TCX Files
Click the upload area above or drag and drop your TCX files. You can upload multiple files at once for bulk conversion (up to 10 files).
Set Default Speed & Convert
Enter a default speed for trackpoints missing speed data (optional), then click convert. The converter processes each file and creates robust FIT files.
Download Your FIT Files
Once conversion is complete, download your new FIT files individually or all at once. Use them with Garmin devices or training platforms.
About TCX to FIT Conversion
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 TCX to FIT Conversion
Converting TCX (Training Center XML) files to FIT (Flexible and Interoperable Data Transfer) format allows you to use your workout data with Garmin devices and services. FIT is the native format for Garmin devices and provides optimized storage and compatibility.
What Data is Preserved?
The conversion process maintains all essential workout data, including:
- Detailed timestamp information
- GPS coordinates (latitude and longitude)
- Altitude measurements
- Heart rate data
- Power output (if available)
- Cadence information
- Speed measurements
- Distance data
- Activity type and sport information
FIT Format Benefits
The FIT format offers several advantages:
- Native format for Garmin devices
- Optimized file size and efficient storage
- Enhanced compatibility with Garmin Connect
- Preserves detailed sensor data
- Faster processing on Garmin devices
Speed Configuration
When converting TCX to FIT, you need to specify a default speed because:
- Some trackpoints in TCX files may not have speed data
- FIT files require speed information for proper device compatibility
- The default speed ensures accurate timing calculations
- Choose a realistic speed based on your activity type (15-35 km/h for cycling, 8-15 km/h for running)
Common Use Cases
Converting TCX files to FIT format is particularly useful for:
- Uploading workouts directly to Garmin Connect
- Using workout data with newer Garmin devices
- Importing data from other fitness platforms to Garmin
- Optimizing file storage and processing speed
- Ensuring maximum compatibility with Garmin ecosystem
Technical Details
The conversion process involves these steps:
- Parsing the XML structure of the TCX file
- Extracting trackpoints and activity data
- Converting coordinates to FIT's binary format
- Applying default speed where needed
- Creating a properly structured FIT file
- Ensuring data integrity and device compatibility
File Compatibility
The converted FIT files are compatible with:
- All modern Garmin fitness devices
- Garmin Connect platform
- Third-party software that supports FIT format
- Fitness analysis tools
- Training platforms with FIT support
Best Practices
For optimal conversion results:
- Ensure your TCX file contains valid trackpoint data
- Choose an appropriate default speed for your activity
- Verify the activity type matches your workout
- Check that GPS coordinates are present for outdoor activities
- Keep original TCX files as backup