Enter how many hours you usually sleep, and the calculator works out your sleep debt over a week, a month and a year — and what it's doing to your health.
A small daily deficit builds up quietly — until you see it in black and white.
The difference between recommended and actual sleep, added up over seven days.
A small daily deficit adds up over months and years into a surprisingly large number.
Chronic sleep debt is linked to fatigue, reduced concentration and health risks.
How many hours you sleep on average and how many days a week — not a general estimate, but your own numbers.
Three questions, one result — no long questionnaires.
Seeing the exact number is the first step towards actually doing something about your sleep.
Three questions, one result — no waiting.
How many hours you usually sleep per night.
Your sleep pattern varies day to day — the calculator accounts for that.
An exact figure for a week, a month and a year, and what it means for your health.
A small daily shortfall that quietly adds up — until you see it in black and white.
Three questions, one result — and a clear picture of how much sleep you're missing.
Calculate for free No sign-up · Free · Instant result