GAD-7 Anxiety Calculator

This calculator adds seven frequency ratings into a GAD-7 total from 0 to 21, reproducing the GAD-7 (Generalized Anxiety Disorder 7-item scale) validated by Spitzer, Kroenke, Williams, and Lowe in a 2006 Archives of Internal Medicine study. Each response is rounded to a whole number and constrained to the questionnaire's 0–3 range before it enters the sum. The seven items therefore carry exactly equal weight: moving any one answer upward by one response level adds one point. No single symptom dominates the arithmetic. What matters most is the combined pattern across nervousness, difficulty controlling worry, excessive worry, trouble relaxing, restlessness, irritability, and apprehensive fear. The numeric severity result is a category code derived from the total. Scores from 0 through 4 produce level 1, 5 through 9 level 2, 10 through 14 level 3, and 15 through 21 level 4.

Those levels correspond to minimal, mild, moderate, and severe in the displayed label. Crossing a boundary can therefore change severity even though the total rises by only one point. This implementation is a scoring aid, not a diagnosis. It does not evaluate functional impairment, duration beyond the period used when answering, medical causes, substance effects, panic symptoms, or clinical context. It also does not treat one question as more urgent than another. Use the total and category as a concise summary to discuss with a qualified professional, especially when symptoms are distressing or disruptive.