Google has set a final deadline of February 2, 2026, for all Fitbit users to switch to Google Accounts.Users who don’t migrate by then will lose access to their Fitbit account and all historical health data.The transition is mandatory for continued access, though users can still export or delete their data instead of migrating.Since Google acquired Fitbit, it has been gradually merging the two ecosystems, allowing users to log in to Fitbit using their Google accounts.