Sleep Calculator

Calculate optimal bedtime and wake-up times based on sleep cycles.

Sleep Cycle Calculator

I want to wake up at:

Sleep cycles (90 min each):

00:00

00:00

A typical sleep cycle lasts about 90 minutes. Waking up at the end of a cycle helps you feel more refreshed.

It takes an average person 14 minutes to fall asleep, which is accounted for in these calculations.