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Sleep Calculator
Best bedtime/wake time based on 90-min sleep cycles.
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Sleep at:
1 cycles (1.7h)05:16
2 cycles (3.2h)03:46
3 cycles (4.7h)02:16
4 cycles (6.2h)00:46
5 cycles (7.7h)23:16
6 cycles (9.2h)21:46
Green = ideal (5-6 cycles)
◆ How it works
Sleep Calculator — 3 simple steps
01
Pick mode
When wake or bed
02
Set time
In 24hr
03
See cycles
90-min sleep cycles
◆ FAQ
Common questions.
Why 90 minutes?
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