Free Insomnia Self-Assessment

A short, confidential questionnaire to help you understand your sleep.

This is the Insomnia Severity Index (ISI) — a validated, widely used 7-question screening tool. It takes about two minutes. Answer each question on a scale from 0 (no problem) to 4 (very severe), then select “Calculate my score” to see your result. A score of 15 or more suggests clinically significant insomnia that is likely to benefit from CBT-I.

Insomnia Severity Index (ISI)

The ISI is a recognised, validated tool for measuring the severity of insomnia. It contains 7 short questions and takes about 2 minutes to complete.

For each question, choose the answer that best fits the last two weeks, on a scale from 0 (no problem) to 4 (very severe). At the end, select “Calculate my score”.

Score ranges

0-7
No clinically significant insomnia
8-14
Sub-threshold (mild) insomnia
15-21
Moderate insomnia
22-28
Severe insomnia

1. How much difficulty do you have falling asleep?

2. How much difficulty do you have staying asleep?

3. How much of a problem do you have with waking up too early?

4. How satisfied are you with your current sleep pattern?

5. How much does your sleep problem interfere with your daily functioning?

6. How noticeable to others do you think your sleep problem is, in terms of impairing your quality of life?

7. How worried or distressed are you about your current sleep problem?

Please note: this questionnaire is for self-assessment only and is not a medical diagnosis or medical advice. For an accurate assessment and appropriate treatment, please consult your GP or a sleep specialist.

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