Wake Up Refreshed Every Morning

Our sleep calculator uses the average length of sleep cycles (90 minutes) to determine the optimal times for you to wake up or go to bed. By aligning your sleep schedule with complete sleep cycles, you can wake up feeling more refreshed.

A sleep cycle is a period of sleep that progresses through different stages: light sleep, deep sleep, and REM (rapid eye movement) sleep. A complete cycle typically lasts about 90 minutes, and we go through multiple cycles each night.

Most adults need 4-6 complete sleep cycles per night, which translates to 6-9 hours of sleep. The exact amount varies from person to person based on age, lifestyle, and individual sleep needs.

Absolutely! The sleep calculator works regardless of your sleep schedule. Simply input your desired wake-up time or bedtime, and it will calculate the optimal sleep times based on your schedule.

While the basic principles of sleep cycles apply to all ages, children have different sleep needs and cycle lengths. This calculator is primarily designed for adults. For children, consult with a pediatrician for specific sleep recommendations.