What time should I wake up if I go to bed at 8:00 PM?
Set your alarm for 5:15 AM for 6 sleep cycles (9 h of sleep) or 3:45 AM for 5 cycles (7 h 30 min). Both include 15 minutes to fall asleep, so you wake up between cycles instead of in deep sleep.
I am going to bed at
Time to fall asleep
Set your alarm for one of these times
Going to bed at 8:00 PM. Includes 15 min to fall asleep.
- 5:15 AMBest
6 cycles · 9 h of sleep · Ideal for most adults.
- 3:45 AMGreat
5 cycles · 7 h 30 min of sleep · Enough rest for most adults.
- 2:15 AMOkay
4 cycles · 6 h of sleep · The minimum for a normal night.
- 12:45 AMShort
3 cycles · 4 h 30 min of sleep · Better than nothing. Plan to catch up.
- 11:15 PMVery short
2 cycles · 3 h of sleep · Only for a quick reset.
- 9:45 PMPower nap
1 cycle · 1 h 30 min of sleep · Emergency only.