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Sleep Calculator

Find the optimal times to wake up or go to sleep based on your sleep cycles. This calculator helps you avoid waking up during deep sleep, which can leave you feeling groggy.

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This sleep calculator uses sleep cycles to determine the best times to wake up or go to sleep. A typical sleep cycle lasts about 90 minutes for adults, but varies for different age groups. During each cycle, you progress through various stages of sleep, from light sleep to deep sleep to REM sleep.

Waking up at the end of a sleep cycle, when you're in lighter sleep, can help you feel more refreshed and alert. This calculator provides options for 4-6 sleep cycles, which is generally recommended for a good night's sleep.

Remember, these are suggestions based on average sleep cycles. Your personal sleep needs may vary.