Sleep Calculator
Based on 90-minute sleep cycles, this calculator helps you find the best bedtime or wake-up time to avoid waking in the middle of a cycle, so you feel refreshed.
â Frequently Asked Questions
What is a sleep cycle?
A sleep cycle is approximately 90 minutes. Adults typically need 5-6 complete cycles (7.5-9 hours).
Why 14 minutes?
The average person takes about 14 minutes to fall asleep after going to bed.
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