Bedtimes, sleep debt, caffeine, insomnia, snoring, shift work — type your problem, get a straight answer in seconds. The full detailed report costs less than a cup of coffee: $2.95.
Sleep debt is the quiet tax of modern life: an hour lost here, half an hour there, until your focus, mood and immunity all run on fumes — and you blame everything but the sleep. The uncomfortable truth is that debt is repaid slowly, not with one weekend lie-in. This calculator totals your weekly shortfall against your real needs and tells you the repayment schedule that actually works.
Work out your accumulated sleep debt and how long it actually takes to repay — because one big lie-in does not fix a month of short nights.
It is the difference between the hours you need and the hours you get, accumulated across nights — this calculator uses your weekly pattern including weekend catch-up.
Only partly — a marathon lie-in disrupts your clock. The proven approach is adding 30-45 minutes nightly for two weeks.
Even 1-2 hours nightly of debt measurably impairs focus, mood and immunity within days; chronic 2+ hour debt is a serious health drag.
Every tool answers instantly from our own knowledge and calculators. Want the deeper, personalised version? Each has a $2.95 full report.