Sleep Calculator
Human sleep cycles are approximately 90 minutes. Waking up at the end of a sleep cycle helps you feel more refreshed. Calculations assume an average of 15 minutes to fall asleep.
I want to wake up at...
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I'm going to bed now...
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It is recommended to choose 6 cycles (9 hours) or 5 cycles (7.5 hours). Waking at the end of a cycle helps you feel more refreshed.
General educational information only — not a medical diagnosis and not a substitute for professional medical advice. Consult a qualified healthcare provider for any health concern.
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