Sleep Calculator
Find the best time to fall asleep or wake up based on 90-minute sleep cycles.
Select your desired wake-up time, and we'll suggest the best times to fall asleep.
To wake up at , you should fall asleep at one of these times:
It takes about 14 minutes on average to fall asleep, so go to bed 15 minutes before these times. Sleep cycles are approximately 90 minutes each.
Select when you plan to go to bed, and we'll suggest the best times to wake up.
If you go to bed at , try to wake up at one of these times:
Waking up between sleep cycles helps you feel more refreshed. Most adults need 5-6 cycles (7.5-9 hours).