Hi everyone,
Some time ago I was considering switching from a Polar watch to a Garmin watch. One of the things that mattered to me before making that decision was whether I could somehow move my existing Polar Flow history into Garmin Connect in a reasonably clean way.
I had quite a lot of data in Polar Flow, and I didn’t want to lose that history just because I was changing devices. So I started looking for a tool that could help with the migration. I found a few partial solutions, but none of them really matched what I wanted.
The main requirement for me was privacy. I didn’t want to upload my Polar export, GPS tracks or training history to any external server just to convert the files. I wanted something that works locally, directly in the browser.
So I ended up building a small tool myself.
It converts Polar Flow ZIP/JSON exports into Garmin-friendly files:
- TCX
- FIT
- experimental CSV export for daily activity data
The important part is that it runs locally in the browser:
- no account required
- no backend
- no upload to a server
- files stay on your device
- free to use
The tool is mainly intended for people switching from Polar Flow to Garmin Connect and wanting to migrate their training history manually.
I’m sharing it here because I know this problem comes up from time to time. I’d also appreciate real-world feedback, especially:
- did Garmin Connect accept the generated TCX/FIT files?
- which sports imported correctly?
- did ZIP import or folder import work correctly for your Polar export?
- did you notice missing data or wrong activity types?
Tool: 0x00.com.pl/.../
This is not affiliated with Garmin, Polar or Fitbit. Just a free tool I built because I needed it myself.
