Sleep Calculator
Optimize your sleep schedule by calculating the best times to wake up or go to bed based on natural sleep cycles.
Settings
Configure your sleep goals
Sleep Results
Your optimal sleep schedule
Enter your time above to see results
Understanding Sleep Cycles
Basics
Each sleep cycle lasts approximately 90 minutes. To wake up feeling refreshed, it's best to wake up at the end of a cycle. This helps avoid that groggy feeling in the morning.
Minimum Sleep4-5 Cycles (6.0 - 7.5 hrs)
Ideal Sleep5-6 Cycles (7.5 - 9.0 hrs)
Sleep Tips
- Stick to a consistent sleep schedule
- Avoid screens 1 hour before bed
- Keep your bedroom cool and dark
- Avoid caffeine late in the day
- Try relaxation techniques before bed