Sleep Calculator
Calculate optimal sleep times based on 90-minute sleep cycles
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Sleep Calculator
Calculate optimal sleep times based on 90-minute sleep cycles
Calculate Sleep Times
Choose your calculation mode and time
Find out when to go to bed to wake up refreshed
Power Nap Calculator
Quick naps for energy boost
Power Nap
20 minutes
Quick energy boost without grogginess
Recovery Nap
60 minutes
Good for cognitive function
Full Cycle Nap
90 minutes
Complete sleep cycle for maximum benefit
Sleep Cycle Visualization
Understanding your sleep cycles
Fall asleep15 min
Cycle 1
90 minutes
1.5h totalCycle 2
90 minutes
3h totalCycle 3
90 minutes
4.5h totalCycle 4
90 minutes
6h totalCycle 5
90 minutes
7.5h totalCycle 6
90 minutes
9h totalEach sleep cycle includes light sleep, deep sleep, and REM sleep. Waking up between cycles helps you feel more refreshed.
Settings
Recommended Sleep
7-9 hours
Adults function best with regular sleep
Sleep History
Your recent sleep schedules
No sleep history yet. Click on a suggested time to save it.
Sleep Tips
Avoid caffeine 6 hours before bed
Keep your room cool and dark
Maintain consistent sleep schedule
Limit screen time before bed