CHADS2 Score Calculator
CHADS₂ Score
Calculate the stroke risk for patients with non-valvular Atrial Fibrillation (AF) to determine the necessity of antithrombotic therapy.
Clinical Criteria
Clinical Precision & Methodology
The CHADS₂ score is a widely used clinical prediction rule for estimating the risk of stroke in patients with non-rheumatic atrial fibrillation (AF). It directs the administration of anticoagulant therapy.
Standardized Risk Stratification
The index accurately stratifies AF patients into low, moderate, and high risk categories based on prospective cohort data, providing a percentage stroke rate per 100 patient-years.
Guideline Concordance
Aligns with ACC/AHA/ESC guidelines for stroke prevention, highlighting critical antithrombotic intervention thresholds (Score ≥ 2 generally necessitates oral anticoagulation).
Thermal Receipt Export
Generates a high-resolution, perfectly scaled PNG image designed specifically for 80mm thermal printers, enabling instant clinical handouts.
Acronym Breakdown
How CHADS2 Score Works
Our high-performance online utility runs entirely client-side, processing your files securely and instantly inside your web browser. For related functions, you can also use our All Medical Tools and BP Analyzer utilities.
Select Risk Factors
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Calculate Score
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Get Risk Level
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Clinical Application
Designed for professional results, privacy, and maximum compatibility across all modern desktop and mobile browsers:
Congestive Heart Failure
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Hypertension
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Age Factor
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Stroke Risk
Full digital precision and optimized performance with zero server-side latency or external data transfers.