The world's most widely used depression self-report screen. The PHQ-9, developed by Kroenke, Spitzer and Williams (2001), is the most widely used depression screening instrument in primary care and research worldwide. Its 9 items map onto the nine core depressive symptoms of the DSM criteria.
The PHQ-9 measures how often you have experienced depressive symptoms over the last two weeks, covering loss of interest, low mood, sleep and appetite changes, low energy, self-criticism, concentration problems and dark thoughts.
A score is a screening signal, not a diagnosis. Diagnosis requires a trained clinician to consider history, functioning and other causes. A score of 10 or above generally warrants a professional assessment; 15 or above warrants one promptly.
Item 9 asks about thoughts of self-harm. Whatever your total score, if this item is anything other than "Not at all", please take it seriously — reach out to a crisis line or a professional. Support is available.
Scoring & bands
Over the last 2 weeks, how often have you been bothered by any of the following problems? Choose the answer that fits you best.
0–4 · None or minimal: Your score suggests few if any depressive symptoms over the past two weeks. Occasional low moods are a normal part of life.
5–9 · Mild: Your score suggests some mild depressive symptoms in the past two weeks, often linked to recent stress, changes or depletion.
10–14 · Moderate: Your score suggests moderate depressive symptoms that may already be affecting energy, interest or daily life. A professional assessment is recommended.
15–19 · Moderately severe: Your score suggests moderately severe depressive symptoms that are likely interfering noticeably with daily life. Please seek professional help soon.
20–27 · Severe: Your score suggests severe depressive symptoms, and things may feel very heavy right now. This is not your fault, and it is treatable — please reach out.
FAQ
Does a high PHQ-9 score mean I have depression?
No. The PHQ-9 is a screening tool that reflects symptom frequency over the past two weeks. A higher score means it is worth getting assessed, but only a clinician can make a diagnosis.
How often can I retake it?
Wait at least two weeks between attempts. Symptoms fluctuate day to day; retaking sooner mostly measures that noise rather than real change.
My score is low but I still feel terrible — what now?
A questionnaire only covers common symptoms and cannot override how you feel. If distress persists, seeing a counsellor or therapist is a reasonable step regardless of the number.
Source: Kroenke K, Spitzer RL, Williams JB. The PHQ-9. J Gen Intern Med, 2001
All scales on this site are widely used self-report instruments for self-understanding and screening only — they cannot replace a professional diagnosis. If you need help, please consult a doctor or therapist.