Sleep Cycle Calculator
A good night's sleep consists of 5-6 full sleep cycles, which last about 90 minutes each. Waking up at the end of a cycle, rather than in the middle of one, helps you feel more rested and alert.
1. Choose Your Goal:Select whether you want to find the best Wake-up Time or the best Bedtime.
2. Enter Your Time:If you're calculating wake-up times, enter the time you plan to go to sleep. If you're calculating bedtimes, enter the time you need to wake up.
3. Calculate:The calculator will show you several optimal times. The times in green are recommended for a full night's rest (7.5 to 9 hours). The calculation includes an average of 15 minutes for you to fall asleep.
This tool provides an estimate based on averages. Individual sleep cycles and the time it takes to fall asleep can vary. This is not medical advice. If you have persistent sleep issues, please consult a healthcare professional.
Wake up refreshed by aligning with your sleep cycles.
You should try to go to bed at one of the following times:
A good night's sleep consists of 5-6 full sleep cycles.