Sleep Debt Calculator
Enter how many hours you slept each night this week to see your total sleep debt and how long it will take to recover. Based on your age-appropriate sleep target.
Your sleep this week Sleep debt tracker
hrs
Override with your personal sleep goal
Hours slept each night:
Mon
Tue
Wed
Thu
Fri
Sat
Sun
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hours of sleep debt this week
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Avg hrs/night
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Target hrs/night
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Nights under target
This week's sleep vs target
■ Under target■ Met target
Recovery plan
Extra per night
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Over 1–2 weeks
Weekend recovery
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Extra each night
Days to recover
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At 1 hr/night extra
Cumulative debt
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Min to repay
FAQs
Can you really "catch up" on sleep? ›
Partially — yes. Research shows you can recover some cognitive function with "recovery sleep," but the relationship isn't perfectly linear. A 2019 study showed that sleeping extra on weekends after a sleep-restricted week partially (but not fully) restored performance. Chronic sleep debt may take weeks to fully recover from, not just one night. Some research suggests metabolic effects of sleep loss may persist longer than cognitive effects. The best approach is preventing sleep debt by consistently meeting your nightly target, rather than "banking" or catching up later.
What are the effects of sleep debt? ›
Even modest sleep restriction (6 hrs/night for 2 weeks) produces impairment equal to 24 hours of total sleep deprivation. Effects include: slowed reaction time, impaired decision-making, increased error rate, mood deterioration (irritability, anxiety), increased hunger and weight gain, weakened immune function, elevated cortisol and blood pressure, and increased accident risk. Studies link chronic sleep debt to increased risk of type 2 diabetes, cardiovascular disease, and obesity. Sleep debt is cumulative — missing 2 hours/night for 5 days = 10 hours deficit.