The connection works one direction: Fitbit sends your data to Apple Health, but Apple Health cannot send data back to Fitbit
Fitbit and Apple Health do not sync automatically. You need to read the Fitbit app on your iPhone, sign into your Fitbit account within that app, then turn on the Apple Health permission. Once you do, the Fitbit app will push your daily steps, distance, calories burned, heart rate, and sleep data into Apple Health roughly every hour. Apple Health then displays all that information alongside data from other sources — your iPhone's built-in step counter, other fitness apps, medical records from your doctor's office if they use Apple Health.
The connection is one-way only. Apple Health cannot push data back into Fitbit. If you use Apple Health to log a workout or food entry, Fitbit will not see it. This matters if you use both apps to track the same things, because you will end up with duplicate entries in Apple Health.
Key Takeaways
- You must use the official Fitbit app on iPhone; the connection does not work on Android or through any other method.
- The Fitbit app needs permission to access Apple Health, which you grant inside the Fitbit app settings, not in your iPhone settings.
- Data flows from Fitbit to Apple Health roughly every hour, so changes in Fitbit take time to appear in Apple Health.
- Apple Health will show duplicate entries if you log the same workout or meal in both Fitbit and Apple Health, so pick one app for logging.
Step-by-step: connecting Fitbit to Apple Health on iPhone
Start with the Fitbit app already installed on your iPhone and your Fitbit device already paired to that app. If you have not done this yet, read Fitbit from the App Store, create or sign into your Fitbit account, and follow the pairing steps for your specific device model.
Open the Fitbit app and tap the profile icon in the bottom right corner. Scroll down and tap Apple Health. You will see a toggle switch next to "Turn on Apple Health Integration" — tap it to turn it on. The app will ask you to confirm that you want Fitbit to share data with Apple Health. Tap Allow. You may also see a second screen asking which data types you want to share — steps, distance, calories, heart rate, sleep, and so on. Leave all of these turned on unless you have a specific reason not to.
That is the entire process. You do not need to change anything in Apple Health itself or in your iPhone settings. The Fitbit app handles the connection on its own. Within an hour, your Fitbit data should appear in the Health app under the relevant categories — open Health, tap the Browse tab at the bottom, and look for Steps, Distance, Active Energy, Heart Rate, or Sleep Data depending on what your Fitbit tracks.
What data actually transfers, and what does not
Fitbit sends these measurements to Apple Health: steps, distance traveled, calories burned (called Active Energy in Apple Health), heart rate, heart rate variability, sleep duration, and sleep stages if your device tracks them. Some older Fitbit models may not track all of these, so you will only see the ones your device records.
Fitbit does not send workout data, food logging, or weight entries to Apple Health through this connection. If you log a workout in the Fitbit app, it stays in Fitbit only. If you log food, it stays in Fitbit only. If you want that information in Apple Health, you have to log it separately in Apple Health or in another app that connects to Apple Health.
Apple Health will not send anything to Fitbit. If you log a workout in Apple Health or in another app like Strava, Fitbit will not see it. Your Fitbit will not count it toward your daily activity goals.
Why your data might not be showing up
If you turned on the connection but do not see Fitbit data in Apple Health after an hour, first check that the toggle is actually on. Open Fitbit, tap your profile icon, scroll to Apple Health, and confirm the switch is blue and in the On position. Sometimes the toggle appears to be on but is not actually enabled.
Second, make sure you are looking in the right place in Apple Health. Open the Health app, tap Browse at the bottom, then scroll through the categories. Fitbit data appears under Steps, Distance, Active Energy, Heart Rate, and Sleep — not under a separate "Fitbit" section. Tap each one to see if data is there.
Third, check that your Fitbit device itself is syncing with the Fitbit app. Open Fitbit, tap your device at the top, and look for a sync button or a recent sync timestamp. If it says "Last synced" more than a few hours ago, tap the sync button to force an update. Fitbit cannot send data to Apple Health if it has not synced to the Fitbit app first.
If none of that works, try signing out of the Fitbit app completely, then signing back in. Open Fitbit, tap your profile icon, scroll to the bottom, and tap Sign Out. Then sign back in with your Fitbit account credentials and turn on Apple Health again.
Avoiding duplicate entries when you use both apps
Apple Health will show all data from all sources at once. If you log a 30-minute run in both the Fitbit app and the Apple Health app, you will see two separate 30-minute runs in Apple Health. This creates confusion about your actual activity and can throw off your daily totals.
The simplest approach is to pick one app for logging workouts and stick with it. If you use Fitbit to log workouts, do not log them in Apple Health. If you prefer Apple Health, do not log them in Fitbit. Your daily step count and heart rate will still sync from Fitbit to Apple Health automatically, so you will not lose that data.
If you already have duplicate entries in Apple Health, you can delete them. Open Health, tap Browse, find the category with duplicates, tap the data point, and swipe left on the entry you want to remove. Tap Delete. This removes it from Apple Health only — it does not affect your Fitbit data.
What to do if you want to disconnect Fitbit from Apple Health
Open the Fitbit app, tap your profile icon, scroll to Apple Health, and tap the toggle to turn it off. The connection stops when ready. Fitbit will no longer send new data to Apple Health, but data that already arrived in Apple Health stays there — it does not delete automatically.
If you want to remove old Fitbit data from Apple Health, you have to delete it manually. Open Health, tap Browse, find each category that has Fitbit data (Steps, Distance, Heart Rate, Sleep), tap it, and delete the entries you do not want. This is tedious if you have months of data, so only do this if you have a specific reason to.
Frequently Asked Questions
Can I connect Fitbit to Apple Health on Android?
No. Fitbit only connects to Apple Health on iPhone. Android users cannot use this connection because Apple Health is an iPhone-only app. If you use Android, you can view Fitbit data in the Fitbit app itself, but not in Apple Health.
Does connecting Fitbit to Apple Health drain my battery?
No. The connection uses very little power. Fitbit syncs roughly every hour, which is the same frequency it uses whether or not Apple Health is connected. Your battery drain comes from the Fitbit device itself and the Fitbit app running in the background, not from the Apple Health connection.
Can I connect multiple Fitbit devices to the same Apple Health account?
Yes. If you have more than one Fitbit device paired to the same Fitbit account, all of them will send data to Apple Health once you turn on the connection. Apple Health will combine the data from all devices, which can be confusing if you wear them at the same time. If you switch between devices, Apple Health will show data from whichever one is syncing.
Will my Fitbit goals update based on Apple Health data?
No. Your Fitbit goals are based only on data in the Fitbit app. If you log a workout in Apple Health, it will not count toward your Fitbit daily goals or badges. You have to log workouts in Fitbit for them to affect your Fitbit progress.
What happens to my data if I delete the Fitbit app?
Data already in Apple Health stays there. Data in your Fitbit account stays on Fitbit's servers. Deleting the app just removes it from your phone — it does not delete your accounts or data anywhere else. When you reinstall Fitbit and sign back in, you can turn on Apple Health again and the connection will work the same way.