Yes, you can sync Fitbit with Apple Health, but the connection works one way

Fitbit data syncs into Apple Health, but Apple Health does not send data back to Fitbit. When you set up the connection, your Fitbit tracker automatically sends steps, heart rate, calories burned, sleep data, and weight measurements to the Apple Health app on your iPhone. This means you see all your Fitbit information in one place without manually entering it.

The sync happens automatically once you turn it on—usually within a few minutes of your Fitbit recording the data. You do not need to open both apps or do anything manually. However, the connection only works on iPhone, not on iPad or Apple Watch, and it requires you to have a Fitbit account and an Apple ID.

Key Takeaways

  • Fitbit syncs one-way into Apple Health on iPhone only, sending steps, heart rate, sleep, and weight data automatically.
  • You set up the connection in the Apple Health app by going to Data Sources & Access, then adding Fitbit as a source.
  • The sync happens in the background after you authorize Fitbit to share data; you do not need to do anything else.
  • If the sync stops working, check that Fitbit is still listed as a data source in Apple Health and that both apps have permission to access health data.

Steps to connect Fitbit to Apple Health on iPhone

Open the Apple Health app and tap the profile icon in the top right corner. Scroll down and tap Data Sources & Access, then tap Data Sources. Tap Add Data Source and search for "Fitbit" in the list. Tap Fitbit when it appears.

You will be taken to a Fitbit login screen. Enter your Fitbit email and password, then tap Allow when Fitbit asks permission to share your data with Apple Health. You may also see a prompt asking which health data you want to share—steps, heart rate, sleep, and weight are the main ones. Check the boxes for the data you want synced, then tap Allow again.

Once you see a confirmation message, the connection is complete. Your Fitbit data will start appearing in Apple Health within a few minutes. You can close both apps and the sync will continue in the background.

What Fitbit data actually transfers to Apple Health

Fitbit sends these measurements to Apple Health: steps taken, distance traveled, active minutes, calories burned, heart rate, resting heart rate, heart rate variability, sleep duration and quality, weight, and body fat percentage (if your Fitbit tracks it). Some Fitbit models also track blood oxygen and skin temperature, which will sync if your device records them.

Data that does not sync includes Fitbit badges, challenges, social activity, or exercise labels you add manually in the Fitbit app. Apple Health receives only the raw measurements, not the Fitbit app's interpretation of them. This means if you log a workout in Fitbit, it may not appear as a workout in Apple Health—it will show only as the underlying heart rate and calorie data.

Troubleshooting when Fitbit stops syncing to Apple Health

If your data suddenly stops appearing in Apple Health, first check that Fitbit is still listed as a data source. Open Apple Health, go to Data Sources & Access, then Data Sources, and look for Fitbit in the list. If it is there but grayed out, tap it and tap Turn On.

Next, check app permissions. Go to iPhone Settings, scroll to Apple Health, and make sure it is set to Allow (not Ask or Don't Allow). Do the same for the Fitbit app in Settings. Then open the Fitbit app, go to your profile, tap your device, and make sure syncing is turned on.

If the connection is still broken, try removing Fitbit from Apple Health and reconnecting. Open Apple Health, go to Data Sources & Access, tap Data Sources, find Fitbit, and tap Delete Data Source. Then follow the connection steps again from the beginning. This usually fixes sync problems that happen after a software update.

Why Apple Health does not send data back to Fitbit

The one-way sync is a limitation of how Apple and Fitbit set up the connection. Apple Health is designed to receive data from many sources but does not have a standard way to send data back out. This means if you log a workout, meal, or water intake in Apple Health, your Fitbit app will not see it.

If you want your Apple Health data in Fitbit, you have to log it in the Fitbit app directly. This is frustrating if you use both apps, but it is the current design. Some third-party apps like IFTTT or Shortcuts can move data between apps, but they require extra setup and do not work for all data types.

Alternatives if you want two-way syncing

If you need data to flow both ways, consider using only the Fitbit app instead of Apple Health. The Fitbit app on iPhone can receive data from other sources like MyFitnessPal (for food and calories) and Strava (for workouts), so you can consolidate information there instead.

Another option is to use a third-party app like Health Sync or Sync Solver, which can copy data between Fitbit and Apple Health in both directions. These apps charge a one-time fee (usually $3 to $5) and require you to grant them permission to both apps. They work in the background and update regularly, though they are not as seamless as the native Fitbit-to-Apple Health connection.

Frequently Asked Questions

Does syncing Fitbit to Apple Health drain my phone battery?

No. The sync uses very little power because it happens in the background and only when your Fitbit has new data to send. You will not notice any battery drain from having Fitbit connected to Apple Health.

Can I sync Fitbit to Apple Health on my iPad?

No. The Fitbit data source is only available in Apple Health on iPhone. If you use an iPad, you can view your health data in Apple Health, but you cannot set up the Fitbit connection there.

What happens to my Fitbit data if I disconnect it from Apple Health?

Your Fitbit data stays in your Fitbit account and the Fitbit app. Any data that already synced to Apple Health stays there too. If you reconnect Fitbit to Apple Health later, new data will sync again, but Apple Health will not re-read old data you already deleted.

Can I sync multiple Fitbit devices to one Apple Health account?

Yes. You can add Fitbit as a data source once, and it will sync data from all Fitbit devices linked to your Fitbit account. You do not need to set up the connection separately for each device.

Why is my Fitbit data showing different numbers in Apple Health than in the Fitbit app?

This usually happens because the apps calculate metrics differently or because the data has not finished syncing. Wait a few minutes and refresh Apple Health by closing and reopening it. If the numbers still differ, check that you are looking at the same time period in both apps—Fitbit and Apple Health sometimes display daily totals at different times of day.