Sleep Calculator

Calculate optimal bedtime and wake-up times based on sleep cycles. Wake up refreshed by timing your sleep with natural 90-minute cycles for better rest and productivity.

  • Free Tool
  • Science-Based
  • No Registration

Sleep Calculator Options

Tip: Sleep cycles last 90 minutes. Waking between cycles helps you feel more refreshed.

Select whether to calculate bedtime or wake time.
Enter your desired wake-up time in 24-hour format.
Enter the average number of minutes it takes you to fall asleep.

Your Sleep Schedule Awaits

Fill out the form and click "Calculate Sleep Times" to find your optimal bedtime or wake time based on sleep cycles.

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