Framingham Risk
Calculate your 10-year Hard Coronary Heart Disease risk using the ATP III Framingham Risk Score point system. Enter age, cholesterol, blood pressure, and smoking status for accurate heart attack risk assessment with breakdown.
About This Calculator
The Framingham Risk Score Calculator estimates your 10-year probability of developing Hard Coronary Heart Disease (Hard CHD)—defined as myocardial infarction (heart attack) or coronary death—using the validated ATP III point-score system from the landmark Framingham Heart Study. This clinical tool is designed for adults aged 30 to 79 years without prior coronary heart disease or diabetes who want to understand their risk of a first heart attack.
The calculator uses six clinical parameters—sex, age, total cholesterol, HDL cholesterol, systolic blood pressure (with adjustment for hypertension treatment), and smoking status—to compute your personalized Framingham point score. Each risk factor contributes points according to published ATP III tables based on data from over 9,000 Framingham Heart Study participants. The total point score is then mapped to a 10-year Hard CHD risk percentage using validated risk tables from the National Cholesterol Education Program (NCEP).
Your results include your total Framingham points, 10-year Hard CHD risk percentage, a risk category (low, intermediate, or high), and a detailed component breakdown showing how each risk factor contributes to your score. The accompanying charts visualize your risk category and the relative contribution of each risk factor to your total point score.
Unlike the broader Framingham General CVD Risk Score (which predicts all cardiovascular events including stroke and heart failure), the Hard CHD model specifically focuses on heart attack and coronary death—the two most serious coronary outcomes. This narrower focus makes it particularly useful for guiding lipid-lowering therapy decisions in primary prevention.
Regional Notes
India: The Framingham Hard CHD model may underestimate risk in South Asian populations, who tend to develop coronary artery disease 5-10 years earlier than Western populations. The WHO/ISH risk prediction charts are sometimes preferred for Indian patients. Even a "low" Framingham risk score should be interpreted cautiously in South Asian individuals with metabolic risk factors.
United States: The ACC/AHA Pooled Cohort Equations (2013, updated 2018) have superseded the ATP III Framingham model for ASCVD risk assessment in US clinical practice. However, the Framingham ATP III score remains widely taught in medical education and serves as an important historical reference for understanding cardiovascular risk assessment.
United Kingdom: The NHS recommends QRISK3 for cardiovascular risk assessment in the NHS Health Check program. QRISK3 includes ethnicity, social deprivation, body mass index, and other risk factors not captured by the Framingham model. The Framingham ATP III score is considered somewhat outdated in UK primary care but is still used in some research settings.
Frequently Asked Questions
What is the Framingham Risk Score for Hard CHD?
The Framingham Risk Score for Hard Coronary Heart Disease (Hard CHD) estimates a person's 10-year risk of developing myocardial infarction (heart attack) or dying from coronary heart disease. It uses the ATP III point score system based on data from the Framingham Heart Study and is intended for adults aged 30 to 79 years without prior CHD or diabetes.
What inputs does the Framingham Risk Score calculator need?
The calculator requires six inputs: sex (male or female), age (30-79 years), total cholesterol in mg/dL, HDL cholesterol in mg/dL, systolic blood pressure in mm Hg, whether you are on hypertension treatment, and whether you currently smoke. These are the standard ATP III risk factors used in the Framingham point-score system.
How does the Framingham point scoring system work?
Each risk factor is assigned points based on well-established tables from the Framingham Heart Study. Age, total cholesterol, HDL cholesterol, systolic blood pressure (adjusted for treatment status), and smoking status each contribute points. The total points are then mapped to a 10-year Hard CHD risk percentage using validated risk tables. For example, a 55-year-old male with total cholesterol 200 mg/dL, HDL 55 mg/dL, and SBP 130 mm Hg not on treatment or smoking would accumulate 12 points, corresponding to a 10% 10-year risk.
What is considered a high Framingham Risk Score?
In the ATP III guidelines, a 10-year Hard CHD risk below 10% is considered low, 10-19% is intermediate, and 20% or above is high. Patients with high risk are candidates for aggressive lipid-lowering therapy and lifestyle modifications. The Framingham model is specifically for Hard CHD events (heart attack and coronary death), not for broader cardiovascular outcomes like stroke or heart failure.
Can I use this calculator if I have diabetes or prior heart disease?
No. The ATP III Framingham Hard CHD point-score model is specifically validated for individuals aged 30-79 without diabetes and without prior coronary heart disease or intermittent claudication. Patients with diabetes are automatically considered CHD risk equivalents and should be managed accordingly. If you have existing cardiovascular disease, consult your cardiologist for condition-specific risk assessment.
Are there different Framingham risk models available?
Yes, the Framingham Heart Study has developed several risk functions. This calculator uses the ATP III Hard CHD model focusing on myocardial infarction and coronary death. There is also a General CVD Risk Score (D'Agostino 2008) that predicts broader cardiovascular outcomes including stroke, heart failure, and peripheral vascular disease, and includes diabetes as a predictor. The Hard CHD model was the original clinical standard used by the National Cholesterol Education Program (NCEP) ATP III guidelines.
How do different countries assess CHD risk?
In the United States, the ACC/AHA Pooled Cohort Equations (2013) have largely replaced Framingham for ASCVD risk assessment, though Framingham ATP III remains a historical reference. In the United Kingdom, QRISK3 (which includes ethnicity, social deprivation, and other factors) is the recommended tool for the NHS Health Check program. In India, the WHO/ISH risk prediction charts are often used because the Framingham model may underestimate risk in South Asian populations, who tend to develop CHD 5-10 years earlier than Western populations.
Can I rely on this calculator for medical decisions?
No. This calculator is for educational and reference purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. The Framingham Hard CHD model may over- or under-estimate risk in certain ethnic groups, and individual risk assessment should always include factors like family history, lifestyle, body mass index, and emerging risk markers. Always discuss your cardiovascular risk with a qualified healthcare provider.