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Sleep Calculator

Calculate ideal sleep and wake times

Health

Wake-up time

Based on 90-min sleep cycles + ~14 min to fall asleep

6 cycles · 6h ✦ Recommended

Go to bed at

12:46 AM

5 cycles · 5h ✦ Recommended

Go to bed at

1:46 AM

4.5 cycles · 4.5h

Go to bed at

2:16 AM

4 cycles · 4h

Go to bed at

2:46 AM

Adults need 7–9 hours · One cycle ≈ 90 minutes