CHA₂DS₂-VASc Calculator
Use the CHA₂DS₂-VASc Calculator for a transparent, instant calculation with validated inputs and cited sources. Searches for “CHADS II” or “CHADS II VASc” may refer to related stroke-risk scores. CHADS₂ is a different, shorter score; this page calculates only the labeled CHA₂DS₂-VASc score. Confirm which model you need and review every displayed factor before using the result.
How to use this calculator
Enter the requested values and units.
Review the assumptions and any warnings shown with the result.
Use the result together with the cited source and your real-world requirements.
Formula
Add the labeled CHA₂DS₂-VASc point values for the entered factors; return the total score without converting it into treatment advice.
Worked example
Worked example: Inputs: C — Heart failure/LV dysfunction: 0 — No: heart failure or left-ventricular dysfunction is absent; H — Hypertension: 0 — No: hypertension is absent; A₂/A — Age category: 0 — Younger than 65; D — Diabetes mellitus: 0 — No: diabetes mellitus is absent; S₂ — Prior stroke/TIA/systemic embolism: 0 — No prior stroke, TIA, or systemic embolism; V — Vascular disease: 0 — No: prior MI, peripheral artery disease, or aortic plaque is absent; Sc — Female sex category in the original score: 0 — No: female sex category is absent. Outputs: Total score: 0.
Assumptions and limits
- The result depends on the values, units, and assumptions entered. It does not infer missing context.
- Review the assumptions and any warnings shown with the result.
Sources
- American College of Cardiology and American Heart Association: 2023 Guideline for the Diagnosis and Management of Atrial FibrillationReference material reviewed for the stated method, units, or domain. Confirm that its scope matches your use case. Reviewed 2026-08-14.
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Verification
How this calculator is checked
Trust comes from reproducible evidence, not model confidence. You can inspect the formula, assumptions, worked example, and cited sources on this page.
- Versioned calculationFormula logic is kept separate from the interface and covered by automated registry and behavior checks.
- Cited evidenceSources linked for independent checking: 1.
- Transparent AI useAI may assist drafting or adversarial review. Agreement between models is not proof, and no human expert review is claimed unless a named reviewer is shown.
Frequently asked questions
How does the CHA₂DS₂-VASc Calculator work?
Add the labeled CHA₂DS₂-VASc point values for the entered factors; return the total score without converting it into treatment advice.
What should I enter?
C — Heart failure/LV dysfunction, H — Hypertension, A₂/A — Age category, D — Diabetes mellitus, S₂ — Prior stroke/TIA/systemic embolism, V — Vascular disease, Sc — Female sex category in the original score
What should I verify?
Review the assumptions and any warnings shown with the result. The result depends on the values, units, and assumptions entered. It does not infer missing context.
Last updated 2026-08-25 · cha2ds2-vasc-labeled-v2 · opportunity-source-2026-08-24 · Published by YunFanLabs