Phq-9 Depression Screening Calculator
The PHQ-9 is a 9-item self-report screener for depression severity, developed by Kroenke, Spitzer and Williams and validated in over 6,000 primary care patients. Each item scores 0-3 based on symptom frequency over the past two weeks, giving a total from 0 to 27, interpreted as minimal, mild, moderate, moderately severe, or severe.
Calculate phq-9 depression screening quickly and accurately. Enter your values and get instant results with this free online calculator.
Answering above 'Not at all' on this question doesn't mean a crisis is imminent — thoughts like this are common enough that the PHQ-9 counts them at any frequency, precisely so they don't get missed. If you're having thoughts of self-harm or of being better off dead, please tell someone: a doctor, a trusted person, or a crisis line. In the US, call or text 988 (Suicide & Crisis Lifeline). In the UK and Ireland, call Samaritans free on 116 123. Anywhere else, findahelpline.com lists free, confidential helplines by country. If you or someone else is in immediate danger, contact local emergency services.
This tool screens for depressive symptoms; it does not diagnose depression or any other condition. Only a qualified health professional can do that, using this score alongside your full clinical picture.
Sources
- American Psychological Association — official PHQ-9 instrument (PDF)
- AHRQ Academy — PHQ-9 instrument (PDF)
- Kroenke K, Spitzer RL. The PHQ-9: A New Depression Diagnostic and Severity Measure. Psychiatric Annals (PDF)
- U.S. Preventive Services Task Force — PHQ-9 scoring card (PDF)
- Pfizer — free public access to the PHQ and GAD-7 assessment tools
- 988 Suicide & Crisis Lifeline (United States)
- Samaritans — 116 123 (UK & Ireland)
- Find A Helpline — crisis lines in 175+ countries