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😴 Sleep Calculator
Calculate optimal bedtimes or wake times based on 90-minute sleep cycles for better rest.
How Do Sleep Cycles Work?
Sleep occurs in cycles of approximately 90 minutes, moving through light sleep, deep sleep, and REM stages. Waking up between cycles (rather than during deep sleep) helps you feel more refreshed. Most adults need 4-6 complete cycles per night.
Tips for Better Sleep
It takes the average person about 15 minutes to fall asleep. This calculator accounts for that delay. For best results, maintain a consistent sleep schedule, avoid screens before bed, and keep your room cool and dark.
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