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How do I track my sleep?

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You can use your Fitbit tracker to see how many hours you sleep and better understand the quality of your sleep. For more information, watch our video and see the common questions below.

To learn how your tracker can help you maintain a more consistent sleep pattern, see What should I know about setting a sleep schedule?

Sleep tracking overview (English only)

What is the difference between the normal and sensitive sleep setting?

Your Fitbit tracker's settings can record your sleep in either "sensitive" mode for extremely detailed sleep reporting or "normal" mode for a more basic idea of your sleep patterns. 

  • The normal setting counts significant movements as being awake (such as rolling over) and is appropriate for most users.
  • The sensitive setting will cause your tracker to record nearly all movements as time spent awake. This setting may be helpful for users with sleep disorders, or those who wear their tracker somewhere other than the wrist while asleep.

If your Fitbit tracker is worn consistently each night with the same setting, the data that it produces should be useful. To change your setting in the Fitbit app for iOS or Windows 10, go to Account > Advanced Settings > Sleep Sensitivity. To change your setting in the fitbit.com dashboard, go to Settings > Devices > scroll down to Sleep Tracking.

What do the different sleep states mean?

  • During sleep mode, when your body is completely at rest and unmoving, your Fitbit tracker records that you are asleep.
  • A restless state of sleep indicates that you moved from a very restful position into one involving greater movement, such as turning over in bed. This doesn't necessarily mean that you were fully awake or cognizant of your movements, but it may indicate that you were not getting the most restful sleep possible at that time.
  • When your tracker indicates that you are moving so much that restful sleep would not be possible, your sleep graph will indicate that you were awake.

How do I see my sleep data?

Tap the sleep tile on your Fitbit app dashboard to see your sleep history and tap any particular day to see details. Choose your device below for step-by-step instructions. On the fitbit.com dashboard, click the sleep tile to view your recent sleep data. Be sure to sync your tracker each morning to see last night's sleep stats.

Time asleep is calculated by subtracting your time awake or restless from the overall tracked time. For example, if you slept eight hours, but woke up two times for 15 minutes each, the time asleep will show 7 hr 30 min. Your sleep quality is based on whether you were asleep, restless, or fully awake.
  • Fitbit app for iOS
    1. Tap a particular day to see your sleep graph and sleep quality information.
    2. Tap the expander arrow in the top right to see more detailed data for a specific period of time. On the 1d view, you can drag your finger across the bar, and see the precise times that you were asleep, awake, and restless.
    3. Tap the expander arrow in the top right to return to your sleep summary.
  • Fitbit app for Android
    1. Tap a particular day to see your sleep graph and sleep quality information.
    2. Tap the expander box in the top right of your sleep pattern graph to view more detailed data for a specific period of time.
    3. Tap the expander box in the top right to return to your sleep summary.
  • Fitbit app for Windows 10
    1. Tap a particular day to see your sleep graph and sleep quality information.
    2. On the 1d view, you can see the precise times that you were asleep, awake, and restless.
    3. Tap the arrow in the bottom left to return to your sleep summary.

How is sleep efficiency calculated?

We use the following equation to calculate your sleep efficiency: 100 * time asleep / (time asleep + time restless + time awoken during sleep)

The time it takes for you to actually fall asleep is not incorporated into this calculation. If you don't move all night it is possible to get 100% sleep efficiency even if it takes you 20 minutes to fall asleep. To see your sleep efficiency, go to the fitbit.com dashboard and click the Sleep tile > See More.

How does my tracker automatically detect sleep?

All of our wrist-based trackers automatically detect your sleep. To track sleep withFitbit One™, see How do I put my tracker in sleep mode?

Autodetection is based on your movement. When you haven’t moved in over an hour, algorithms assume that sleep has begun, which is confirmed by the length of time your movements are indicative of sleep behavior only (rolling over, etc). Morning movement tells your tracker that you’re awake. If you’re not moving but not asleep for long periods of time it’s possible for your tracker to falsely record sleep, in which case you can delete the sleep record from your dashboard.

Can I change my sleep goal?

 For instructions on how to set or change a sleep goal, choose a section below.
  • Fitbit app for iOS
    1. From the Fitbit app dashboard, tap the sleep tile. This is the tile that says "How did you sleep?" or, if you tracked sleep the night before, shows how many hours and minutes you slept.
    2. Tap the gear in the top right.
    3. Adjust your sleep goal and tap Done.
  • Fitbit app for Android
    1. On the Fitbit app dashboard, tap the sleep tile. This is the tile that says "How did you sleep?" or, if you tracked sleep the night before, shows how many hours and minutes you slept.
    2. Tap the gear icon in the top right.
    3. Adjust your sleep goal and tap OK.
  • Fitbit app for Windows 8.1
    1. On the Fitbit app dashboard, tap the sleep tile. This is the tile that says "How did you sleep?" or, if you tracked sleep the night before, shows how many hours and minutes you slept.
    2. Tap the moon icon on the bottom.
    3. Adjust your sleep goal and tap Save.
  • Fitbit app for Windows 10
    1. On the Fitbit app dashboard, tap the sleep tile. This is the tile that says "How did you sleep?" or, if you tracked sleep the night before, shows how many hours and minutes you slept.
    2. Tap the moon icon on the bottom.
    3. Adjust your sleep goal and tap Save.
For sleep goals, success is determined based on actual calculated time asleep, not time spent in bed.

Can I log a nap?

Yes. If your tracker tracks sleep automatically, all naps at least an hour in length should be automatically tracked.  If you have a Fitbit One, simply put your tracker into sleep mode.

Later when you sync your tracker, your nap will appear on your sleep log. 

How do I set a silent alarm?

You can set and manage silent alarms in the Account tab of the Fitbit app. For more information, see How do I manage silent alarms?

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Last updated: July 8, 2016
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