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PHQ-9 Depression Severity Score Calculator

Sum of 9 items each scored 0-3 (range 0-27).

Compute the Patient Health Questionnaire-9 (PHQ-9) depression severity score. Each of the 9 DSM-IV depression items is scored 0 (not at all), 1 (several days), 2 (more than half the days), 3 (nearly every day). Cut-points: 5 mild, 10 moderate, 15 mod-severe, 20 severe.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Score = Σ nine 0-3 item scores.

In depth

Compute the Patient Health Questionnaire-9 (PHQ-9) depression severity score. Each of the 9 DSM-IV depression items is scored 0 (not at all), 1 (several days), 2 (more than half the days), 3 (nearly every day). Cut-points: 5 mild, 10 moderate, 15 mod-severe, 20 severe.