Bedtime Calculator โ Plan Bedtimes from Your Wake-Up Time
Enter your wake-up time, sleep cycle length and time to fall asleep to compare bedtimes for four to six cycles.
cyclesGet into bedFall asleepBed-to-wake time
6 cycles9 hr 15 min
5 cycles7 hr 45 min
4 cycles6 hr 15 min
Each bedtime subtracts the selected number of sleep cycles plus your time to fall asleep from the wake-up time.
Sleep cycles vary by person and by night. This is a simple alarm-planning estimate, not medical advice or a guarantee of sleep quality.