Calculate the time you should fall asleep to reach the certain number of sleep cycles.
Sleep Calculator calculates what time to fall asleep to reach a certain number of 90-minute sleep cycles.
A good night's sleep should consist of 5-6 cycles.
How to use this Sleep Calculator?
- Enter the time you want to wake up.
- Click "Calculate".
- Check your results!
|Time you want to wake up||Number of sleep cycles||Suggested time of falling asleep|
|07:00 AM||5||11:15 PM|
|05:30 AM||6||08:15 PM|
|06:00 AM||6||8:45 PM|