ISI
Tired of being tired? The validated 7-item Insomnia Severity Index.
Lying awake at 3am wondering if this counts as insomnia? This free insomnia test is based on the Insomnia Severity Index (ISI), the standard validated measure clinicians and researchers use to gauge sleep difficulty.
Seven quick questions about falling asleep, staying asleep, and how sleep is affecting your days give you an instant, private severity result in plain language — a clear baseline you can retest against as you change your sleep habits.
Yes. You can take the preview for free with no account. Sign in to unlock the full result and track it over time.
The ISI classifies sleep difficulty from no clinically significant insomnia through severe — your result explains your band in plain language.
No — the ISI measures insomnia (trouble falling or staying asleep), not breathing disorders. Suspected apnea needs a medical sleep study.