Enter your time in bed and actual sleep time. Get your sleep efficiency percentage and clinical category. Formula: (sleep time ÷ time in bed) × 100.
| Efficiency | Category | Clinical note |
|---|---|---|
| ≥ 90% | Excellent | Highly consolidated sleep |
| 85–89% | Normal | Clinically typical healthy adults |
| 75–84% | Below average | May indicate fragmentation |
| < 75% | Poor | Clinical insomnia threshold (if persistent) |
Source: AASM, Morin CM et al. Am J Psychiatry. 2006.