Sleep Calculator
Find the best times to sleep or wake up based on 90-minute sleep cycles for more restful sleep.
Sleep cycles last about 90 minutes. Waking up between cycles helps you feel more rested. The recommended amount is 5-6 cycles (7.5-9 hours).
Go to bed at:
09:45 PM
Recommended9h
6 cycles
11:15 PM
Recommended7.5h
5 cycles
12:45 AM
6h
4 cycles
02:15 AM
4.5h
3 cycles
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