Framingham Risk Score
The Framingham Risk Score is one of the most extensively validated tools for predicting 10-year coronary heart disease (CHD) risk in individuals without known cardiovascular disease. Developed from the landmark Framingham Heart Study, this point-based system integrates eight key risk factors: age, gender, total cholesterol, HDL cholesterol, systolic blood pressure, hypertension treatment status, smoking status, and diabetes. The score helps clinicians identify patients at elevated risk and guide preventive interventions.
This calculator is designed for healthcare professionals and individuals aged 30–74 who want to understand their cardiovascular risk profile. By entering your risk factors, you’ll receive a point total and corresponding 10-year CHD risk percentage, classified into Low (< 10%), Moderate (10–19%), or High (≥ 20%) risk categories. The tool provides actionable recommendations based on ATP III guidelines.
How to Use the Framingham Risk Calculator
Enter your age (must be between 30 and 74 years).
Select your gender (Male or Female).
Enter your Total Cholesterol in mg/dL.
Enter your HDL Cholesterol in mg/dL.
Enter your Systolic Blood Pressure in mmHg.
Indicate whether you are on Hypertension Treatment (Yes/No).
Indicate whether you are a Current Smoker (Yes/No).
Indicate whether you have Diabetes Mellitus (Yes/No).
Use the quick example buttons to test common clinical scenarios.
Click Calculate to view your total points and 10-year CHD risk.
Review your Risk Category (Low, Moderate, or High).
Read the Recommendation based on your risk level.
Copy, share, or embed your results using the buttons below.
How the Framingham Risk Calculator Formula Works
The Framingham Risk Score uses a point-based system where each risk factor contributes a specific number of points. The total points are then converted to a 10-year CHD risk percentage using gender-specific tables.
Point Contributions:
Age (30–74): 0–8 points (increases with age)
Total Cholesterol: 0–4 points (higher values = more points)
HDL Cholesterol: -1 to 2 points (higher HDL = fewer points)
Systolic BP (untreated): 0–4 points
Systolic BP (treated): 0–5 points
Smoking: 0 or 2 points
Diabetes: 0 or 2 points
Risk Conversion (ATP III):
Risk Classification:
Low Risk: < 10% 10-year CHD risk
Moderate Risk: 10–19% 10-year CHD risk
High Risk: ≥ 20% 10-year CHD risk
The Framingham Risk Score is validated for individuals aged 30–74 without known cardiovascular disease and is the basis for ATP III treatment recommendations.
Worked Example
A 55-year-old male patient presents for a routine health assessment with the following values:
Total Cholesterol: 210 mg/dL
HDL Cholesterol: 48 mg/dL
Systolic BP: 132 mmHg
No hypertension treatment
Non-smoker
No diabetes
Step 1 – Calculate points:
Step 2 – Look up risk for 9 points (male):
9 points corresponds to approximately 5% 10-year CHD risk.
Step 3 – Classification:
5% falls in the Low Risk category (< 10%).
Step 4 – Recommendation:
“Your 10-year CHD risk is low. Focus on maintaining a heart-healthy lifestyle with regular exercise, a balanced diet, and smoking cessation if applicable. Continue routine health monitoring.”
This patient’s low risk suggests lifestyle modifications are sufficient, and pharmacotherapy is not currently indicated.
Frequently Asked Questions
What is the Framingham Risk Calculator and how does it work?
The Framingham Risk Calculator estimates the 10-year risk of coronary heart disease using the Framingham Risk Score. It works by assigning points to age, gender, total and HDL cholesterol, systolic blood pressure, hypertension treatment, smoking, and diabetes, then converting the total points to a risk percentage using gender-specific tables.
What is the Framingham Risk Score?
The Framingham Risk Score is a validated clinical prediction tool developed from the Framingham Heart Study. It estimates the 10-year risk of developing coronary heart disease based on eight key risk factors and is the foundation for ATP III treatment guidelines.
What is a normal Framingham Risk Score?
A normal Framingham Risk Score is below 10% (Low Risk). Moderate risk is 10–19%, and High risk is ≥ 20%. High risk (≥ 20%) is considered a CHD risk equivalent and warrants aggressive management.
What is the difference between Framingham Risk Score and ASCVD Risk Score?
The Framingham Risk Score estimates 10-year CHD risk (coronary heart disease only), while the ASCVD Risk Score estimates 10-year ASCVD risk (includes stroke). The ASCVD score is more comprehensive and is recommended by the ACC/AHA guidelines, while the Framingham score is still widely used and forms the basis for ATP III recommendations.
What is a CHD risk equivalent?
A CHD risk equivalent is a condition that carries the same risk of a coronary event as established CHD. In ATP III, diabetes, peripheral arterial disease, and a 10-year CHD risk ≥ 20% are considered CHD risk equivalents, warranting aggressive risk factor management.
When is statin therapy recommended based on Framingham Risk Score?
According to ATP III guidelines: Low risk (< 10%), lifestyle modifications. Moderate risk (10–19%) consider statin therapy based on LDL goals. High risk (≥ 20%), CHD risk equivalent; aggressive statin therapy and risk factor management are indicated.
Can the Framingham Risk Calculator be used for patients with known cardiovascular disease?
No. The Framingham Risk Score is for primary prevention, patients aged 30–74 without known CVD. Patients with established CVD are already at high risk and should be managed according to secondary prevention guidelines.
What is the age range for the Framingham Risk Calculator?
The Framingham Risk Score is validated for adults aged 30–74. For patients outside this range, other risk assessment tools are more appropriate.
How often should the Framingham Risk Score be reassessed?
Risk factors can change over time. Reassess the Framingham Risk Score periodically, every 4–6 years is reasonable, or more frequently if there are significant changes in health status or medications.
Does gender affect the Framingham Risk Score calculation?
Yes. The Framingham Risk Score uses separate point systems and risk tables for men and women, reflecting the different baseline risk and risk factor relationships between genders.
