Sleep Cycle Calculator

Find the best times to sleep and wake based on 90-minute sleep cycles

I want to wake up at

Go to bed at

9:46 PM

6 cycles · 9h of sleep

11:16 PM

5 cycles · 7h 30m of sleep

Recommended

12:46 AM

4 cycles · 6h of sleep

Based on 90-minute sleep cycles with a 14-minute fall-asleep time