Sleep Calculator
Calculate optimal wake-up or bedtime based on 90-minute sleep cycles.
Recommended Times
💡 Tip: Each sleep cycle is ~90 minutes. Waking up between cycles helps you feel refreshed!
Calculate optimal wake-up or bedtime based on 90-minute sleep cycles.
💡 Tip: Each sleep cycle is ~90 minutes. Waking up between cycles helps you feel refreshed!
Waking up in the middle of a sleep cycle can leave you feeling groggy. It's best to wake up at the end of a cycle. A typical sleep cycle lasts about 90 minutes.