Enter the hours you usually sleep, the hours you actually slept, and how many nights that gap lasted. The result is the hour gap, not a medical diagnosis.
| 8 h | 6 h | 5 | 10.0 hours |
| 7.5 h | 7.5 h | 7 | 0.0 hours |
| 8 h | 5 h | 3 | 9.0 hours |
Sleep debt here is (usual hours minus hours slept) times the number of nights. If you slept more than usual, the debt for that entry is zero. Use it to see the size of a short week, then decide whether the next step is an earlier bedtime or a schedule change.