Rate your recent chance of dozing off or falling asleep in the following situations, in contrast to feeling just tired.
1. Sitting and reading
2. Watching TV
3. Sitting, inactive in a public place (e.g. a theater or a meeting)
4. As a passenger in a car for an hour without a break
5. Lying down to rest in the afternoon when circumstances permit
6. Sitting and talking to someone
7. Sitting quietly after a lunch without alcohol
8. In a car, while stopped for a few minutes in the traffic
© OpiCalc Sleep Physiology
Johns MW. (1991)
Verified
Last Review: 2026-07-17
| Score 0–10 | Normal range |
| Score 11–12 | Mild excessive sleepiness |
| Score 13–15 | Moderate excessive sleepiness |
| Score 16–24 | Severe excessive sleepiness |
Johns MW. • Sleep. 1991;Vol 14, Issue 6. pp. 540-545. The foundational paper establishing the scale.
Last Comprehensive Review: 2026-07-17
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