The Patient Health Questionnaire-9 (PHQ-9) is the validated screening instrument clinicians use to assess depression severity. It takes about two minutes, is completely private (nothing is stored or sent anywhere — it runs in your browser), and can help you decide whether to seek professional support.
About this tool
Understanding your score: 0–4 minimal, 5–9 mild, 10–14 moderate, 15–19 moderately severe, 20–27 severe. A score of 10+ is the usual threshold for discussing treatment options with a professional. This is a screening tool, not a diagnosis. If you are having thoughts of self-harm, please reach out to a local crisis line or emergency services immediately.
This tool is for general information and screening purposes only. It is not medical advice and cannot diagnose any condition. Always consult a qualified healthcare professional about your health.