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Sleep Calculator

Calculate optimal bedtime and wake-up times based on sleep cycles.

How to Use

  1. Enter your desired wake-up time.
  2. Select the number of sleep cycles.
  3. Check the recommended bedtime.

FAQ

What is a sleep cycle?

A sleep cycle is approximately 90 minutes and includes light sleep, deep sleep, and REM sleep stages.

How many hours of sleep are recommended?

7-9 hours of sleep is recommended for adults, which equals about 5-6 sleep cycles.