Insomnia Severity Index

Answer 7 questions about your sleep and get an ISI score with interpretation.

Rate each item for the past 2 weeks. Select one option per question, then click Calculate Score.

1. Difficulty falling asleep

NoneMildModerateSevereVery Severe

2. Difficulty staying asleep

NoneMildModerateSevereVery Severe

3. Problems waking up too early

NoneMildModerateSevereVery Severe

4. Satisfaction with your current sleep pattern

Very SatisfiedSatisfiedNeutralDissatisfiedVery Dissatisfied

5. How noticeable is your sleep problem to others?

Not at allA littleSomewhatMuchVery Much

6. Worried or distressed about your sleep problem?

Not at allA littleSomewhatMuchVery Much

7. Interference with daily functioning (fatigue, concentration, mood)?

Not at allA littleSomewhatMuchVery Much
Disclaimer: This tool is for educational screening only and does not constitute medical advice or a clinical diagnosis. If you are concerned about your sleep, consult a qualified healthcare professional.

Answer all 7 questions and click Calculate Score to see your result.

Summary

Answer 7 questions about your sleep and get an ISI score with interpretation.

How it works

  1. Rate each of the 7 ISI items on a 0–4 scale using the radio buttons.
  2. Click "Calculate Score" to sum all seven ratings.
  3. Your total score (0–28) is mapped to one of four severity bands.
  4. Review the interpretation and the disclaimer before acting on results.

Use cases

  • Screen yourself for clinically significant insomnia before a doctor visit.
  • Track changes in sleep severity over time by retaking the questionnaire.
  • Understand whether daytime impairment may be linked to a sleep disorder.
  • Provide a structured baseline when discussing sleep concerns with a clinician.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu