Sleep Debt Calculator
See how much sleep you have accumulated as a deficit over any period. Enter your target and actual sleep, choose how many days the pattern lasted, and get the total debt, severity level and recovery time.
How to use
1
Enter your target sleep
Type how many hours of sleep you need per night (most adults: 7–9).
2
Enter your actual sleep
Type your average actual sleep per night.
3
Choose the period
Enter how many days this pattern has lasted.
4
Read your sleep debt
See your total sleep debt, severity level and recovery time.
Features
Total sleep debt
See how many hours of sleep you have accumulated as a deficit.
Severity level
Classifies your debt as none, mild, moderate or severe.
Recovery estimate
See how many nights of extra sleep (+1 hour/night) it will take to recover.
Equivalent full nights lost
See how many complete nights of sleep your debt equals.
Common use cases
- Track sleep debt during a busy work period
- See how much sleep you have lost over a week
- Plan recovery sleep after a period of short nights
- Understand the cumulative effect of poor sleep