Fitbit devices have a robust sleep-tracking function that work in the same way and deliver the same information. The Fitbit Charge 3 tracker can track your sleep through movement alone, and newer models will use a heart rate sensor to track the length of time spent in each sleep stage. To view your sleep data, you can sync your device each morning to check your sleep score, hours slept, sleep schedule, and sleep stages. You can check this information on your Fitbit device or in the Fitbit app.
| Characteristics | Values |
|---|---|
| Devices | Fitbit Charge 3 Tracker |
| Sleep tracking function | Available |
| Sleep tracking features | Sleep stages, time asleep, last 14 days' sleep, and sleep schedule settings |
| Sleep tracking devices | Fitbit devices that track heart rate (except Charge HR and Surge) |
| Sleep tracking data | Hours slept, sleep score, sleep schedule, sleep stages |
| Additional features | Snore and noise detection, blood oxygen saturation (SpO2) tracking |
| Battery life | Robust battery life, up to seven days |
| Sleep tracking accuracy | Factors like how the tracker is worn or sleeping position can affect accuracy |
| Sleep tracking setup | Wear the device moderately snugly and higher on the wrist |
| Sleep tracking subscription | Fitbit Premium subscription for advanced features |
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What You'll Learn

How to set up sleep tracking on the Fitbit Charge 3
To set up sleep tracking on the Fitbit Charge 3, you'll first need to ensure that your device is set up and connected to your phone. Then, simply wear the device when you go to bed, and it will automatically detect when you fall asleep and when you wake up.
Fitbit devices that track heart rate, such as the Charge 3, also track sleep stages. You can sync your device each morning to review your sleep data, including your sleep score and a breakdown of the different stages of sleep: REM, light, and deep. You can also check your weekly averages for certain sleep stats, including hours slept, sleep schedule, and sleep stages.
If you have a Fitbit Premium account, you'll be able to access even more detailed sleep data and long-term trends in the Health Metrics dashboard. Premium members also have access to a Sleep Profile, which provides a Monthly Sleep Analysis and assigns you an animal avatar that matches your sleeping style.
It's important to note that the sleep tracking feature can impact your device's battery, so Fitbit recommends charging your device to at least 40% before going to bed. Additionally, if you have a Fitbit Sense or Versa 3 and a Fitbit Premium account, you can enable the Smart Wake feature, which monitors your sleep stages and wakes you during a light sleep stage within a 30-minute window before your set alarm time.
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How to sync your Fitbit Charge 3 with your phone
To sync your Fitbit Charge 3 with your phone, you will first need to download the Fitbit app. Here's a step-by-step guide:
Downloading the Fitbit App
- Open the app store on your phone (e.g., Google Play Store for Android).
- Search for "Fitbit" in the store.
- Tap "Install" and wait for the app to download.
Setting Up Your Fitbit Charge 3
- Open the Fitbit app on your phone.
- If you already have a Fitbit account, tap "Log in" and enter your email and password. If you don't have an account, tap "Join Fitbit" and create a new account by entering your information.
- Ensure that you grant the necessary permissions, such as Location Permissions, by tapping the checkbox and then "Allow" on the pop-up.
- Tap the "Account" button in the upper right corner of the app (it looks like an ID card).
- Tap "Set up a Device."
- Select "Charge 3" from the list of devices.
- Tap "Set Up Your Fitbit Charge 3" and then "I Agree" to any terms or conditions.
- Plug your Charge 3 into the charger and follow the on-screen instructions, which may include tapping "Next."
- Enter any additional information or codes as prompted. For example, you may need to type in the numbers shown on the Charge 3's screen.
Once you've completed these steps, your Fitbit Charge 3 should be successfully set up and synced with your phone. This syncing capability is crucial for reviewing your sleep data, as Fitbit devices offer robust sleep tracking functions. By syncing your device each morning, you can access detailed sleep data, including your sleep score, hours slept, sleep schedule, and even sleep stages.
To view your sleep data, you can check your Fitbit device or access the information in the Fitbit app. The app provides insights into your sleep patterns, such as averages for the week and longer periods for specific sleep stats. Remember that wearing your Fitbit snugly and higher on your wrist is recommended for the most accurate sleep tracking results. Additionally, ensuring your device has sufficient battery life before bedtime is essential, as the sleep tracking feature consumes battery power.
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How to view your sleep data on the Fitbit app
To view your sleep data on the Fitbit app, you must first ensure that your Fitbit device is synced to your smartphone. This will allow the data collected by your Fitbit tracker to be transferred to your smartphone, where you can view it on the Fitbit app.
To sync your Fitbit device, swipe up from the clock face on your tracker or watch to access the Fitbit Today tab. Here, you can view your total sleep from the previous night, as well as your Sleep Score. The Sleep Score is a rating out of 100 that reflects the quality of your sleep. It is calculated based on the time you spent asleep (50% of the score), the amount of time you spent in deep and REM sleep (25% of the score), and restoration (25% of the score).
On the Fitbit app, you can access more detailed sleep data. The main dashboard will give you a breakdown of your sleep stages, including light sleep, REM sleep, and deep sleep. Tapping into the main sleep window will provide even more detailed information. Fitbit Premium account holders will have access to additional features, such as long-term trends in the Health Metrics dashboard and the Sleep Profile, which includes a Monthly Sleep Analysis and assigns you an animal avatar based on your sleeping style.
To track your blood oxygen saturation (SpO2) using a Fitbit Charge 3 tracker, you will need to wear your device for at least one full day and night. If your watch has an SpO2 sensor but you cannot see the data, you may need to install the necessary clock face. To do this, tap the 'Today' tab in the Fitbit app, then your profile picture, and select your device. Tap 'Clock faces', select the 'SpO2' category, and choose a face to install.
Additionally, the snore and noise detection feature on the Fitbit app allows you to monitor the noise in your bedroom, including your snoring or that of someone else in the room. To enable this feature, tap the setting icon on the top right of the app's Sleep page, then tap 'Sleep Sensitivity' and select either 'Sensitive' or 'Normal'.
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How to check your sleep schedule on the Fitbit Charge 3
To check your sleep schedule on the Fitbit Charge 3, you must first ensure that you are wearing your Fitbit device during your sleep. This is because the tracker uses your movement and, depending on the model, your heart rate to track your sleep.
After a good night's rest, you can check your sleep schedule by syncing your device with your phone. This will give you a readout of the night's sleep, including the amount of time you spent asleep and a "sleep score" rating out of 100, which reflects the quality of your sleep. You can also access this information on the Fitbit app by tapping the Sleep tile on the Today tab. Here, you will be able to see more detailed information about your sleep stages, including the number of hours you spent in each sleep stage and your weekly average minutes asleep.
If you have a Fitbit Premium subscription, you will be able to access even more detailed information and long-term trends in the Health Metrics dashboard. For example, you will be able to see a Monthly Sleep Analysis and access a fun feature that assigns you an animal avatar based on your sleeping style. Additionally, with a Premium subscription, you can also track snoring overnight, whether it is yours or your partner's. Your Fitbit will use its microphone to analyze noise levels at regular intervals and tell you how loud and frequent the snoring was.
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How to use the snore and noise detection feature on the Fitbit Charge 3
Unfortunately, the snore and noise detection feature is not available on the Fitbit Charge 3 tracker. This feature is only available for users with the Versa 3 or Fitbit Sense, who are also Fitbit Premium subscribers.
However, if you would like to use the sleep tracking feature on your Fitbit Charge 3, you can do so by wearing your Fitbit during sleep for at least 14 days during the previous month. These do not have to be consecutive days. Your sleep logs must include sleep stages data, which can be accessed through the basic Fitbit app.
If you have a Fitbit Premium account, you can access more advanced sleep tracking features, such as a sleep profile that assigns you an animal-like avatar. Additionally, Fitbit devices that track heart rate (except Charge HR and Surge) also track sleep stages, which can be viewed in the Fitbit app or on your Fitbit device.
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Frequently asked questions
To set up your Charge 3 tracker to monitor your sleep, wear your tracker during sleep for at least 14 days during the previous month. These days do not have to be consecutive. Your sleep logs must include sleep stages data. Make sure your tracker has recently synced. The more sleep you log, the more closely your sleep profile will reflect your patterns.
You can check your sleep data on the tracker by opening the Fitbit app and tapping the Sleep duration tile. You can also check your sleep data by navigating to the Settings icon on the top right of your app's Sleep page.
To check your sleep data on your phone, sync your tracker each morning to review your sleep data, such as your sleep score. You can check this information on the Fitbit app.
You can see the number of hours you slept each night of the week and your weekly average, your sleep scores throughout the week, an overview of your sleep schedule, and the number of hours you spent in each sleep stage.









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