Framingham Risk Score Calculator
Calculate 10-year cardiovascular disease risk using the Framingham risk assessment model. Enter values for instant results with step-by-step formulas.
Formula
Risk Score = Sum of age, cholesterol, HDL, BP, and smoking points
The Framingham Risk Score assigns points based on age, total cholesterol, HDL cholesterol, systolic blood pressure (treated or untreated), and smoking status, with separate scoring tables for males and females. The total points map to a 10-year cardiovascular disease risk percentage.
Worked Examples
Example 1: Middle-Aged Male Assessment
Problem: A 55-year-old male, non-smoker, total cholesterol 220 mg/dL, HDL 45 mg/dL, systolic BP 140 mmHg (untreated), no diabetes.
Solution: Age 55: +8 points\nTC 220 (age 50-59): +3 points\nNon-smoker: 0 points\nHDL 45: +1 point\nSBP 140 untreated: +1 point\nTotal: 13 points → 12% risk
Result: 13 points | 10-year CVD risk: 12% — Intermediate Risk
Example 2: Young Female Smoker
Problem: A 38-year-old female smoker, total cholesterol 250 mg/dL, HDL 55 mg/dL, systolic BP 125 mmHg (untreated).
Solution: Age 38: -3 points\nTC 250 (age <40): +11 points\nSmoker (age <40): +9 points\nHDL 55: 0 points\nSBP 125 untreated: +1 point\nTotal: 18 points → 30% risk
Result: 18 points | 10-year CVD risk: 30% — High Risk
Frequently Asked Questions
What is the Framingham Risk Score?
The Framingham Risk Score (FRS) is a validated clinical tool used to estimate an individual's 10-year risk of developing cardiovascular disease (CVD), including heart attack and stroke. It was developed from the landmark Framingham Heart Study, which has followed residents of Framingham, Massachusetts since 1948. The score incorporates major cardiovascular risk factors including age, sex, total cholesterol, HDL cholesterol, systolic blood pressure, blood pressure treatment status, smoking status, and diabetes. By assigning points to each risk factor, the tool calculates a percentage probability of experiencing a cardiovascular event within the next decade. It helps clinicians identify high-risk patients who may benefit from preventive interventions such as statin therapy or lifestyle modifications.
What do different Framingham risk levels mean?
The Framingham Risk Score categorizes individuals into three main risk tiers. A 10-year risk below 10% is classified as low risk, meaning the patient has less than a 1-in-10 chance of a cardiovascular event and typically requires only lifestyle counseling. Intermediate risk (10% to 20%) suggests a moderate probability of CVD and warrants closer monitoring, lifestyle changes, and consideration of statin therapy depending on additional risk factors. High risk (above 20%) indicates a significant likelihood of cardiovascular events and generally qualifies for aggressive treatment including lipid-lowering medications, blood pressure management, and comprehensive risk factor modification. Some guidelines add a very-high-risk category for scores above 30%, which often applies to patients with established cardiovascular disease or diabetes.
What are the limitations of the Framingham Risk Score?
While widely used, the Framingham Risk Score has several recognized limitations. It was originally derived from a predominantly white population in the northeastern United States, which may limit its accuracy for other ethnic and racial groups. The score tends to underestimate risk in South Asian and overestimate risk in East Asian populations. It does not account for family history of premature cardiovascular disease, which is an important independent risk factor. Other unincorporated factors include obesity, physical inactivity, chronic kidney disease, inflammatory markers like C-reactive protein, and coronary artery calcium scores. The score also does not differentiate between types of cardiovascular events. For these reasons, clinicians often use the FRS alongside other assessment tools like the ASCVD Pooled Cohort Equations.
How does HDL cholesterol affect cardiovascular risk?
HDL (high-density lipoprotein) cholesterol is often called 'good cholesterol' because higher levels are associated with lower cardiovascular risk. HDL particles transport cholesterol from the arteries back to the liver for disposal, a process called reverse cholesterol transport. This helps prevent the buildup of plaque in artery walls (atherosclerosis). In the Framingham scoring system, HDL levels of 60 mg/dL or above earn protective negative points (reducing the risk score), while levels below 40 mg/dL add points (increasing risk). Ideal HDL levels are above 40 mg/dL for men and above 50 mg/dL for women. Lifestyle factors that raise HDL include regular aerobic exercise, moderate alcohol consumption, weight loss, smoking cessation, and consuming healthy fats like olive oil and omega-3 fatty acids.
How can you lower your Framingham Risk Score?
Lowering your Framingham Risk Score involves modifying the controllable risk factors in the calculation. Quitting smoking eliminates the smoking-related points and is one of the most impactful single changes, reducing cardiovascular risk by up to 50% within a few years. Lowering total cholesterol through diet (reducing saturated fats, increasing fiber) or statin medications directly reduces cholesterol-related points. Raising HDL through exercise and dietary changes provides protective benefits. Controlling blood pressure through medication, sodium reduction, regular exercise, and stress management lowers the BP component. Maintaining a healthy weight and managing diabetes, while not directly in the score, improve the underlying risk factors. Regular aerobic exercise of at least 150 minutes per week addresses multiple risk factors simultaneously.
Is my data stored or sent to a server?
No. All calculations run entirely in your browser using JavaScript. No data you enter is ever transmitted to any server or stored anywhere. Your inputs remain completely private.