Sleep debt quantifies the gap between how much sleep you get and how much your body actually needs. Research shows it accumulates silently — you stop noticing how impaired you are.
Use it when you feel chronically tired and want to understand the real scale of the problem in concrete numbers.
Annual sleep debt in hours, your weekly deficit, and an estimated cognitive capacity based on research by Dinges et al.
Most people know they are tired. Few know the real numbers. Enter your sleep data and see the exact toll your sleep debt is taking — in hours, cognitive performance, money and health.
Paste your data code, or upload a previously exported JSON file.