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CHADS₂ Stroke Risk Calculator

Stroke risk in non-valvular atrial fibrillation.

Compute the CHADS₂ score for stroke risk in patients with non-valvular atrial fibrillation, by tallying clinical risk factors (CHF, hypertension, age ≥ 75, diabetes, prior stroke). Score 0-6.

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 = CHF + HTN + Age≥75 + Diabetes + 2·StrokeTIA.

In depth

Compute the CHADS₂ score for stroke risk in patients with non-valvular atrial fibrillation, by tallying clinical risk factors (CHF, hypertension, age ≥ 75, diabetes, prior stroke). Score 0-6.