Epworth Sleepiness Scale (ESS) calculator
Answer 8 quick questions about your chance of dozing off in everyday situations to get your ESS score out of 24. This is a screening tool, not a diagnosis.
What the Epworth Sleepiness Scale measures
The ESS is a widely used questionnaire that doctors use as a starting point to gauge daytime sleepiness, based on how likely you are to doze off in eight everyday situations. It doesn't diagnose any condition on its own — a high score is a cue to talk to a doctor, who may look into causes like sleep apnea, insomnia, or other factors affecting your sleep.
Source: Johns MW. A new method for measuring daytime sleepiness: the Epworth sleepiness scale. Sleep. 1991;14(6):540–545. PubMed ↗
Frequently asked questions
What is the Epworth Sleepiness Scale?
It's a standard 8-item questionnaire developed to measure general daytime sleepiness, by asking how likely you are to doze off in different everyday situations.
Is this a medical diagnosis?
No. It's a self-assessment questionnaire clinicians use as a starting point, not a diagnostic tool. Only a doctor can diagnose a sleep disorder.
What should I do if my score is high?
A higher score is worth discussing with a doctor, especially at 10 or above. They can help figure out possible causes and next steps.
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