CHA₂DS₂-VASc Calculator Online — Stroke Risk in Atrial Fibrillation

The CHA₂DS₂-VASc score is used to estimate ischemic stroke and thromboembolism risk in patients with non-valvular atrial fibrillation (AF). It is widely used to guide anticoagulation decisions. This tool is for educational purposes only and must not replace individual clinical assessment.

CHA₂DS₂-VASc Calculator

Fill in the clinical variables and click “Calculate”.

Congestive heart failure / LV dysfunction (C) Hypertension (H) Age Diabetes mellitus (D) Prior stroke/TIA or thromboembolism (S₂) Vascular disease (MI, PAD, aortic plaque…) (V) Female sex (Sc)

Result

CHA₂DS₂-VASc score: –

Higher scores indicate higher annual stroke risk. As a general rule, 0 in men or 1 in women is considered low risk; ≥2 in men or ≥3 in women usually indicates anticoagulation according to major guidelines. Always interpret in clinical context.

References

Wikipedia. CHA₂DS₂-VASc score. Available at: https://en.wikipedia.org/wiki/CHA2DS2%E2%80%93VASc_score
Zaidi SR, et al. CHA₂DS₂-VASc Score for Atrial Fibrillation. StatPearls Publishing; 2023.
Chen LY et al. CHA₂DS₂-VASc Score and Stroke Prediction in Atrial Fibrillation. Stroke. 2019.
Medscape. Scores for Stroke Risk Assessment in Atrial Fibrillation. Available at: https://emedicine.medscape.com/article/2172597-overview