Switch From Fitbit to Apple Watch Without Losing Data

There is no official one-tap tool for moving your data from Fitbit to Apple Watch — Fitbit (owned by Google) and Apple Health simply don’t sync with each other. The good news: you won’t lose years of steps, sleep, and workouts if you migrate in the right order. Export your complete Fitbit archive first, set up Apple Health on your iPhone, then use a third-party sync app to write your historical data into Apple Health — and only then cancel or close your Fitbit account.

What transfers — and what doesn’t

Fitbit stores your history in Google’s cloud; Apple Health stores data on your iPhone and in iCloud. Because the two ecosystems don’t interoperate, anything you keep depends on either a raw data export or a sync app that reads Fitbit’s servers and writes into Apple Health. Based on what Fitbit’s data export includes and what Apple Health accepts, here’s the realistic picture:

• Transfers well: steps and distance, resting and continuous heart rate, sleep sessions, weight and body measurements, and logged workouts (including GPS routes in many sync apps).
• Transfers partially: Active Zone Minutes map only loosely to Apple’s Exercise minutes; calorie estimates use different models on each platform, so historical and new numbers won’t line up exactly (see how accurate smartwatch calorie counts are).
• Doesn’t transfer: Fitbit-proprietary scores — Sleep Score, Daily Readiness, Stress Management — plus badges, streaks, challenges, and friend lists.

Step 1: Export your complete Fitbit archive

Do this first, while your account is fully active. Fitbit accounts now run on Google accounts, so the export goes through Google Takeout:

1. Sign in at takeout.google.com with the Google account linked to your Fitbit.
2. Click Deselect all, then check only Fitbit.
3. Choose a one-time export, pick .zip, and confirm. Large multi-year archives can take hours to a day or more to generate.
4. Download the archive when Google emails you, and store a copy somewhere safe (cloud drive plus local disk).

The archive contains your raw daily data as JSON and CSV files. Even if a sync app later moves everything for you, this export is your permanent, app-independent backup.

Step 2: Set up Apple Health and your Apple Watch

1. On your iPhone, open the Health app, tap your profile, and fill in your Health Details (height, weight, date of birth, sex) — Apple uses these for calorie and heart-rate calculations.
2. Pair the watch and complete activation. Our guide on how to set up an Apple Watch for the first time walks through the full process, including Activity ring goals.
3. Enable Health data sync to iCloud (Settings > your name > iCloud > Health) so imported history is backed up end to end.

Step 3: Import your Fitbit history with a sync app

Apple Health accepts data written by third-party apps, and several App Store utilities are built specifically to pull your history from Fitbit’s servers and write it into Health. User feedback consistently points to a few practical tips:

1. Search the App Store for a Fitbit-to-Apple-Health transfer or sync app, and check recent reviews before buying — most charge a small one-time fee for full history transfer.
2. Sign in to your Fitbit/Google account inside the app and grant it read access.
3. In the iPhone’s Health permissions prompt, allow the app to write the categories you care about (steps, sleep, heart rate, weight, workouts).
4. Start with a short date range (one month) as a test, verify it in the Health app, then run the full multi-year import. Large imports can take several hours.

Your migration options at a glance

Step 4 (optional): Wear both devices for a week

Apple and Fitbit use different algorithms for steps, calories, and sleep staging, so expect a visible shift in your baselines after the switch. Wearing both for a few days helps you recalibrate expectations — especially for sleep, where scoring models differ substantially between brands (see can a smartwatch track sleep stages accurately?). The change in numbers reflects different math, not a change in your health.

Step 5: Cancel Premium and retire your Fitbit

1. Cancel Fitbit Premium in your subscription settings (Google Play, the App Store, or your Google account, depending on where you subscribed) so you aren’t billed after switching.
2. Factory-reset the Fitbit before selling or gifting it: this is done from the device’s settings menu and removes your account link.
3. Consider keeping the Fitbit account open (it’s free) for a few months as a fallback until you’re confident everything transferred.

Frequently asked questions

Can Fitbit sync directly with Apple Health?

No. The Fitbit app on iPhone does not write to Apple Health, and Apple provides no Fitbit importer. A third-party sync app or a manual export is the only way to move data between the two ecosystems.

Will my Fitbit badges, streaks, and Sleep Scores carry over?

No. Proprietary features — badges, streaks, Sleep Score, Daily Readiness — exist only inside Fitbit’s platform. Only the underlying raw measurements (sleep duration and stages, heart rate, steps) can move to Apple Health.

Do I lose my data if I cancel Fitbit Premium?

No. Canceling Premium removes premium features like Daily Readiness, but your historical data stays in your account. Data is only deleted if you delete the Fitbit/Google account itself — which is why you export first.

How far back can I import history into Apple Health?

Most sync apps can import your full Fitbit history, often going back many years, because Fitbit’s servers retain daily summaries for the life of the account. Full-resolution intraday data may be limited, so day-level totals transfer more reliably than minute-by-minute detail.

Sources

• Apple Watch — Apple
• Health app — Apple
• Google Takeout (Fitbit data export)
• Fitbit — official site