Bedtime Calculator

Estimate an ideal bedtime based on your wake-up time, sleep goal, and the idea of full sleep cycles.

Enter the time you want to wake up.
Choose the kind of target you want.
Age slightly affects the suggested sleep window.
Used to estimate when you should actually get in bed.
Poor recent sleep may push the target earlier.
Choose a simpler or more detailed result.
How we calculate

We estimate bedtime by counting backward from your wake-up time using 90-minute sleep cycles plus your selected time to fall asleep. Sleep goal, age group, and recent sleep quality slightly adjust the target.