Sleep Debt Calculator
Log a week of sleep and see how much sleep debt you've piled up
Enter your nightly sleep goal and how many hours you actually slept each day, and this calculator totals up the sleep debt you've accumulated over the week. It's useful for anyone — office workers, students, parents — wondering whether that constant fatigue and brain fog traces back to not getting enough rest. Your entries are calculated in your browser and never sent to a server.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Enter your target sleep goal per night, in hours.
- Enter how many hours you actually slept for each day, Monday through Sunday.
- Your total sleep debt for the week and a status rating (healthy / caution / at risk) appear instantly at the top.
- If your debt is piling up, use the status guidance to plan how you'll catch up on rest.
FAQ
- Does sleeping longer than my goal reduce my debt?
- No. This calculator only accumulates the hours you fell short of your goal. Extra sleep doesn't cancel out debt, which follows the standard medical view on sleep deprivation.
- Is my sleep data saved anywhere?
- No. Everything is calculated inside your browser and nothing is transmitted to or stored on a server.
- How much sleep debt is actually dangerous?
- A weekly total of 0 hours is rated healthy, 1 to 7 hours is a mild caution, and 8 hours or more is flagged as a serious risk.