Sleep Calculator

Based on 90-minute sleep cycles. Falling asleep takes ~14 minutes.

Sleep Tip of the Day
Recommended bedtimes (go to sleep at...)
Recommended wake times (set alarm for...)
Ideal wake times from right now
Recommended sleep hours by age group
Age GroupRecommended Hours
School-age (6-13)9-11 hours
Teen (14-17)8-10 hours
Adult (18-64)7-9 hours
Senior (65+)7-8 hours