Sleep debt calculator
Sleep debt is the gap between the sleep you need and the sleep you actually get. Miss an hour a night and it doesn't disappear — it accumulates across the week, and by Friday you can be carrying the equivalent of a full missed night. This calculator adds that gap up so you can see what your mornings are really working against.
Your weekly sleep debt
8.5 hours
Real debt
Real debt. Fix the sleep block first — a stronger alarm alone will just make the tiredness punctual. See our guide.
If the debt is small and the mornings still fail, the alarm may genuinely be the problem: see Silent Wake in action.