Atrial fibrillation · Stroke-risk factors
CHA₂DS₂-VASc
Record the validated risk factors used in the CHA₂DS₂-VASc score. Female sex is treated as a risk modifier in contemporary guidance, not a stand-alone treatment indication.
Patient factors
Select one answer per row
Private by design. Values are calculated on this device and are not saved or sent to analytics.
Result
Complete all factors
The score and its interpretation band will appear here.
Evidence packet
What this tool is based on
This versioned record keeps the citations, equation or decision rule, units, test coverage, intended population, and exclusions attached to the tool.
How evidence review works →Adults with atrial fibrillation or flutter when current guidance uses a validated thromboembolic-risk score.
Additive 0–9 point factor score: CHF 1, hypertension 1, age 65–74 1 or ≥75 2, diabetes 1, stroke/TIA/thromboembolism 2, vascular disease 1, female sex category 1.
Categorical point score only; no unit conversions.
Every factor, mutually exclusive age bands, maximum score, incomplete state, and band boundaries.
Do not skip
Limitations and exclusions
- Does not prescribe anticoagulation.
- Female sex is a risk modifier and should not be interpreted as a stand-alone indication.
- Confirm the applicable AF population, valvular disease, and current guideline thresholds.
- Bleeding risk, contraindications, drug interactions, renal function, and patient preferences require separate assessment.
One clearly labeled, contextually relevant sponsor may support this reference area. Sponsorship will never interrupt inputs, obscure results, influence formulas, or imply clinical endorsement.
About this tool
CHA₂DS₂-VASc Score Calculator
Use this CHA₂DS₂-VASc calculator to total the published stroke-risk factors for a patient with atrial fibrillation while keeping every selected criterion visible.
The score is a risk-stratification aid, not an automatic anticoagulation decision. Apply current guidance, population fit, competing risks, and patient-specific factors.