Fitbit and Apple Health can share data, but the connection works only one way

Fitbit sends your activity, heart rate, and sleep data to Apple Health, but Apple Health does not send data back to Fitbit. You set up the connection through the Fitbit app on your iPhone, and once it is active, new data flows automatically. The process takes a few minutes and requires you to give Fitbit permission to write to Apple Health.

This one-way flow means you can see all your Fitbit metrics in the Health app alongside data from other sources — workouts logged in Apple Watch, nutrition tracked elsewhere, or steps counted by your phone. However, Fitbit will not pull in data from Apple Health to display in the Fitbit app itself.

Key Takeaways

  • Fitbit sends steps, heart rate, sleep, and exercise data to Apple Health automatically once you authorize the connection.
  • The connection is one-way only — Apple Health does not send data back to Fitbit.
  • You must use the Fitbit app on an iPhone to set up the connection; Android devices cannot connect to Apple Health.
  • After you authorize the connection, data syncs whenever your Fitbit app refreshes, usually within minutes of activity.
  • If the connection stops working, signing out of your Fitbit account and signing back in usually restores it.

What data Fitbit sends to Apple Health

Fitbit transfers your step count, distance, calories burned, heart rate, heart rate variability, sleep duration, and sleep stages (light, deep, REM). It also sends exercise sessions you log manually in the Fitbit app, including the type of activity, duration, and calories burned. Any custom goals you set in Fitbit do not transfer — only the raw measurements.

The data appears in Apple Health under the relevant categories: Steps and Distance go to the Activity section, heart rate data goes to Heart, and sleep information appears in Sleep. Exercise sessions show up in the Workouts section. This organization lets you compare Fitbit data with measurements from other devices or apps you use.

How to set up the connection on iPhone

Open the Fitbit app and tap your profile icon in the bottom right corner. Select Settings, then scroll down and tap Apple Health. Tap the toggle to turn on Apple Health integration. The app will ask you to confirm which data types you want to share — steps, distance, heart rate, sleep, and exercise are the main ones. Tap Allow when prompted to give Fitbit permission to write to Apple Health.

After you authorize, the connection is active. Your Fitbit data will begin syncing to Apple Health the next time the Fitbit app refreshes, which usually happens within a few minutes. You do not need to do anything else — the sync continues automatically as long as the Fitbit app remains installed and you stay signed in.

Why the connection might stop working

The most common reason the sync stops is that you signed out of your Fitbit account or uninstalled and reinstalled the app without re-authorizing Apple Health. If data is no longer flowing, open the Fitbit app, go to Settings > Apple Health, and check that the toggle is still on. If it is off, turn it back on and confirm the permissions again.

Another reason is that you revoked Fitbit's permission in Apple Health itself. Open the Health app, tap your profile icon in the top right, select Health Records or Apps, find Fitbit, and check whether it still has permission to write data. If the permission is missing, go back to the Fitbit app and re-authorize. Signing out of Fitbit completely and signing back in also resets the connection and often fixes sync problems.

Android devices and Apple Health

Fitbit cannot connect to Apple Health on Android phones because Apple Health is an iOS-only app. If you use an Android device, your Fitbit data stays within the Fitbit app and does not sync to any Apple service. You can still view all your metrics in Fitbit itself, but you will not see them in Apple Health.

If you switch from Android to iPhone, set up the Apple Health connection through the Fitbit app on your new device. Historical data from before the connection was made will not transfer — only new data collected after you authorize the sync will appear in Apple Health.

Using Fitbit data in Apple Health

Once your Fitbit data is in Apple Health, you can view trends, set reminders, and share specific metrics with doctors or family members. Open the Health app and tap the Browse tab to find the data type you want to examine — tap Steps, for example, to see your daily step count over time. You can also add Fitbit metrics to your Health app dashboard by tapping Edit in the Summary tab and selecting which data to display.

If you use multiple fitness devices or apps, Apple Health consolidates everything in one place. You might see steps from your iPhone, workouts from Apple Watch, and heart rate from Fitbit all in the same graph. This makes it easier to spot patterns across different types of activity and health measurements.

Alternatives if you want two-way sync

If you need data to flow both directions — from Apple Health back into Fitbit — you will need to use a third-party automation app like IFTTT or Zapier. These services can read data from Apple Health and write it to Fitbit, though the setup is more complex and may require a paid subscription depending on how many automations you create.

For most people, one-way sync is sufficient because Fitbit is already your primary device for collecting activity and health data. Two-way sync matters mainly if you log workouts in Apple Health or another app and want those workouts to count toward Fitbit goals and badges. In that case, a third-party tool bridges the gap, though you will need to check whether it supports your specific Fitbit model and the data types you want to sync.

Frequently Asked Questions

Does Fitbit sync to Apple Health automatically?

Yes, once you authorize the connection in the Fitbit app, data syncs automatically whenever the app refreshes. This usually happens within minutes of activity. You do not need to manually sync or open the app for the transfer to occur.

Can I see my Fitbit data in Apple Health on my Apple Watch?

Yes. The Health app on your Apple Watch displays the same data as the Health app on your iPhone, including Fitbit metrics. Open the Health app on your watch and navigate to the data type you want to view.

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

Data already in Apple Health stays there. If you turn off the Apple Health toggle in the Fitbit app, new data will no longer sync, but past measurements remain visible in the Health app. Your Fitbit app continues to store all your data normally.

Can I choose which Fitbit metrics to send to Apple Health?

During setup, you can select which data types to share — you do not have to send everything. You can also change these settings later by going to Settings > Apple Health in the Fitbit app and toggling individual data types on or off.

Why is my Fitbit data not showing up in Apple Health?

Check that the Apple Health toggle is on in Fitbit Settings and that you granted permission when prompted. Make sure you are signed into your Fitbit account. If data still is not appearing, try signing out and signing back in, or reinstall the Fitbit app and re-authorize the connection.