Sleep Calculator

Calculate the best bedtime or wake-up time based on healthy 90-minute sleep cycles and your fall-asleep buffer.

Healthy Sleep Tips

  • Keep a consistent schedule—even on weekends.
  • Dim lights and avoid screens 60–90 minutes before bed.
  • Limit caffeine after early afternoon; avoid heavy meals late.
  • Keep your room cool, dark, and quiet; consider blackout curtains.
  • Get morning daylight and light activity to anchor circadian rhythm.