How do I share my real-time heart rate with fitness equipment and apps?

Connect Fitbit Charge 6 to compatible exercise machines and apps to see your real-time heart rate directly on the display1.

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What fitness equipment or apps are compatible with Charge 6?
Charge 6 is intended to be compatible with fitness equipment/apps that use the Bluetooth Heart Rate Profile.
We tested and confirmed connectivity for the latest models of:
  • iFit (NordicTrack)
  • Peloton equipment and mobile app
  • Concept2
  • Tonal
  • Hydrow and Hydrow Wave
  • Spinning bikes and mobile app
  • Echelon
Your Charge 6 will work with other equipment/apps not listed here, but not all Bluetooth-compatible devices and apps will connect or behave similarly. Additional devices and apps will be added to this list in the future.
How do I connect Charge 6 to my fitness equipment or app?
  1. Swipe down from the clock face and tap HR on equipment.
  2. Follow the instructions on your workout machine or fitness app to connect a Bluetooth heart rate monitor.
  3. When Charge 6 connects, a screen appears on your tracker, asking to share your heart rate. Tap Share.
  4. Tap Start on your tracker to start your exercise.
  5. End the exercise on Charge 6 to stop sharing your heart rate.

Alternatively, Charge 6 can pair with fitness equipment/apps during the first two minutes after you start a workout in the Exercise app on your Charge 6.

Fitbit Charge 6: How to sync your heart rate to gym equipment

Why won’t Charge 6 connect or display my heart rate on a particular machine or app?

If you have trouble connecting Charge 6 to a compatible device or app listed above, make sure Charge 6 and your fitness equipment are fully up-to-date. For instructions on how to update Charge 6, see How do I update my Fitbit device? To update your fitness equipment firmware, follow the manufacturer’s instructions.

After updating, follow the troubleshooting steps below.

  1. Restart Charge 6. For instructions, see How do I restart my Fitbit device?
  2. Make sure Charge 6 isn’t currently connected to any other fitness equipment or apps. You can only use this feature with one piece of equipment or app at a time.
  3. Disconnect or unpair Charge 6 from the fitness equipment or app you want to use, turn off Bluetooth on your equipment, then turn it back on and try to pair again.
  4. If you’re trying to connect to a fitness app, close any fitness apps previously used with your Charge 6 and re-open the app you intend to use.


1 Sharing real-time heart rate to fitness equipment impacts battery life of your device.

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