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.
| Time you want to wake up | Number of sleep cycles | Suggested time of falling asleep |
|---|---|---|
| 07:00 | 5 | 23:15 |
| 05:30 | 6 | 20:15 |