Sleep Cycles Calculator

💤 Sleep Cycles Calculator

Calculate optimal bedtime and wake-up times based on 90-minute sleep cycles

🛏️ Calculate Bedtime

Calculate Wake Time

💡 Sleep Optimization Tips

  • Each sleep cycle lasts approximately 90 minutes
  • Waking up at the end of a cycle helps you feel more refreshed
  • Most adults need 5-6 complete sleep cycles (7.5-9 hours)
  • Allow 15 minutes to fall asleep when calculating bedtime
  • Maintain consistent sleep and wake times, even on weekends