Sleep Debt Calculator

Three numbers, and the arithmetic on what you are actually carrying — per week, per year, and in whole nights lost.

Sleep debt is easy to carry without noticing, because the deficit accrues in half-hours and gets paid in years.

This is straightforward arithmetic rather than an assessment. The useful part is usually the annual figure, which tends to be considerably larger than people expect.

Three numbers. Use your honest average rather than a good week.