A fine-tuned 90-minute sleep cycle calculator.
Calculate your...
What time should I go to bed?
If you need to wake up at a certain time in the morning, you can use our bed-time calculator to find the most optimal bedtimes. Aim for a consistent bedtime and 7-9 hours of sleep each night to wake up each morning feeling energized.
What time should I wake up?
If you have a big day ahead tomorrow and need to be in top shape, use our wake-up time calculator to find the most optimal wake-up times. The recommended wake-up times are in 90-minute cycles, so try to get as many as possible.
