Semteo한국어

Sleep Calculator

Wake up between sleep cycles instead of in deep sleep.

Sleep calculator

min

Go to bed at

11:15 PM

5 sleep cycles · 7.5 hours

6 cycles (9 h)
9:45 PM
5 cycles (7.5 h)
11:15 PM
4 cycles (6 h)
12:45 AM
3 cycles (4.5 h)
2:15 AM

Assumes 90-minute sleep cycles so you wake between cycles. Adults need at least 7 hours a night.

ShareNaverFacebookX

FAQ

How long is a sleep cycle?

About 90 minutes on average.

Related calculators

Calorie calculatorBMI calculatorWork hours