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Sleep Cycle Calculator
Optimize your rest by waking up at the end of a sleep cycle. Calculate the perfect bedtime or wake-up time to feel refreshed.
Optimize your rest by waking up at the end of a sleep cycle. Calculate the perfect bedtime or wake-up time to feel refreshed.
A typical sleep cycle lasts about 90 minutes. Waking up in the middle of a cycle can leave you feeling groggy. This calculator finds times that align with the end of your cycles.
Enter your desired wake-up time and click calculate to see your optimal sleep schedule.
X Sleep Cycles
Sleep Duration
X hours Y min
Feeling
Refreshed