Choose the time you need to wake up, and we’ll suggest bedtimes that let you finish full sleep cycles.
Good to know
- A sleep cycle averages about 90 minutes, but it varies between people and through the night.
- We add about 15 minutes for falling asleep.
- Most adults need 7 or more hours a night. Five or six cycles is a good target.
- If you regularly feel unrefreshed despite enough sleep, talk to your doctor.
This tool gives a general estimate for healthy adults. It isn’t medical advice. Medical disclaimer.