Sleep Debt Calculator
Enter how many hours you slept each night this week. The tool totals your sleep debt and builds a safe, gradual catch-up plan.
Hours slept each night
Weekly sleep chart
Nightly breakdown
| Night | Slept | Balance | Running debt |
|---|
How to use
- Set your nightly sleep need (usually 7 to 9 hours).
- Enter the hours you slept for each of the last 7 nights. Use decimals like 6.5.
- The calculator updates instantly: total debt, nightly breakdown and status.
- Follow the catch-up plan — it spreads recovery sleep over several nights.
Note: This tool gives a rough estimate for general wellness only. If you often feel exhausted, snore loudly, or fall asleep during the day, talk to a doctor. Sleeping more than 10 hours regularly can also be a sign to check with a doctor.
Frequently Asked Questions (FAQ)
How does the sleep debt calculator work?
You enter how many hours you slept each night for the past week; the tool compares it with your sleep need, totals your sleep debt and builds a gradual catch-up plan.
What is my sleep debt?
The difference between the sleep you needed over the past 7 nights and the sleep you actually got.
How should I recover sleep debt?
Follow the catch-up plan: spread recovery sleep over several nights rather than sleeping in heavily all at once.
Is the sleep debt calculator free?
Yes, it is free with no signup.