Sleep Debt Calculator — Measure Your Sleep Deficit & Cognitive Impairment

Calculate your accumulated sleep debt and discover its impact on cognitive performance, productivity, and how many days you need to recover.

Practical example: 6 hrs sleep for 14 days, 3 coffees to cope. For a busy parent (6 hrs/night) scenario, enter the values that match your situation to get an instant cost estimate.

What is sleep debt? Sleep debt is the cumulative difference between the sleep you need and the sleep you actually get. Miss 2 hours per night for 5 days and you have a 10-hour sleep debt. The brain keeps an accurate running total — unlike popular belief, you cannot 'get used to' less sleep. You only lose awareness of your impairment.