Sleep Cycle Calculator
Calculate the best bedtimes and wake-up alarms based on natural 90-minute sleep cycles to wake up feeling fresh, active, and energized.
Select your desired wake-up time:
Hour
:
Minute
AM / PM
Select the time you will get into bed:
Hour
:
Minute
AM / PM
Going to sleep right now?
Current device time: --:--. Click below to calculate optimal morning wake-up times.
Choose your nap goal:
⏱️ How long does it take you to fall asleep?
Recommended Bedtimes
Go to bed at one of these times to wake up refreshed at the end of a 90-minute sleep cycle:
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