PHQ-9Past 2 weeksAbout 2 minutes 👥 No usage yetSource: Kroenke K, Spitzer RL, Williams JBW (2001)

Patient Health Questionnaire-9

The PHQ-9 is a widely used depression screening tool. It contains 9 items with a total score of 0–27, assessing symptoms over the past 2 weeks.

What this scale measuresThe PHQ-9 measures depressive symptoms over the past two weeks, covering loss of interest, low mood, sleep and appetite problems, fatigue, self-criticism, concentration, psychomotor changes and thoughts of self-harm. It is the international first-line tool for depression screening and a common partner for insomnia comorbidity screening. If item 9 is non-zero, please seek professional help promptly.
How to read your score
  • No or minimal depression0 – 4

    Your depression symptoms are absent or minimal.

  • Mild depression5 – 9

    You have mild depression symptoms. Consider monitoring your mood.

  • Moderate depression10 – 14

    Your depression symptoms are noticeable. Consider seeking a professional evaluation.

  • Severe depression15 – 19

    Your depression symptoms are severe. Please seek medical care immediately.

  • Severe depression20 – 27

    Your depression symptoms are severe. Please seek medical care immediately.

These ranges are for screening reference only and cannot replace a professional diagnosis.

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Important: This result is for self-screening only

All scales on this site are publicly available academic screening tools, not medical devices, and do not constitute a clinical diagnosis. Results are affected by mood, routine, environment, and physical condition.

  • Scale results cannot be used as the sole basis for diagnosis, medication, treatment, or prescription.
  • Do not self-diagnose or self-medicate based solely on scale scores.
  • If you have physical, mental, sleep, or emotional concerns, please consult a qualified healthcare provider.

Users assume full responsibility for any medical or wellness decisions based on these results.