Sleep Calculator
Calculate optimal sleep times based on 90-minute sleep cycles.
Recommended Wake Times
To wake up refreshed, try these times:
How Sleep Cycles Work
A complete sleep cycle takes about 90 minutes. Waking up at the end of a cycle helps you feel more refreshed.
Light Sleep
Transition phase, easily awakened
Deep Sleep
Physical restoration occurs
REM Sleep
Mental restoration, dreaming
Complete Cycle
~90 minutes total
Sleep Tips
- 🌙 Keep a consistent sleep schedule
- 📱 Avoid screens 1 hour before bed
- ☕ No caffeine after 2 PM
- 🌡️ Keep room temperature cool (65-68°F)
- 🌅 Get sunlight in the morning
- 🛏️ Reserve bed for sleep only