Framingham Risk Calculator
Calculate framingham risk quickly with our cardiovascular system tool. Get results based on evidence-based formulas with clear explanations.
Medical disclaimer: This calculator is provided for educational and informational purposes only and does not constitute medical advice, diagnosis, or treatment. Results are general estimates and may not reflect your individual circumstances. Always consult a qualified healthcare professional before making decisions about your health.
Framingham Risk Calculator
Calculator
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Formula: Framingham Risk Score — 10-year CVD risk estimation using age, sex, cholesterol, BP, smoking, diabetes status
Worked example — 10% (Moderate risk)
Formula
Framingham Risk Score — 10-year CVD risk estimation using age, sex, cholesterol, BP, smoking, diabetes status
Based on the Framingham Heart Study. Uses Cox proportional hazards model with validated coefficients. <10% = low risk, 10-20% = moderate, >20% = high.
Worked Examples
Example 1: 55yo male
Problem:Age 55, male, TC 200, HDL 50, SBP 130, non-smoker
Solution:Points: 10+1+0+1 = 12 → 10% risk
Result:10% (Moderate risk)
Example 2: 62yo Female, Treated Hypertension
Problem:Age 62, female, TC 230, HDL 45, SBP 148, on BP medication, non-smoker.
Solution:Age 62 → 12 pts. TC 230 (200-239 band) → 3 pts. HDL 45 (30-49 band) → 2 pts. SBP 148 on meds (140-159 band) → 4 pts. Total = 21 points, which maps to roughly 17% on the female point table.
Result:~17% (High risk) — treated blood pressure still adds meaningful points
Frequently Asked Questions
What is the Framingham Risk Score?
It estimates your 10-year risk of developing cardiovascular disease based on the landmark Framingham Heart Study, which has followed participants since 1948.
What actions can lower my Framingham risk score?
Quitting smoking reduces CVD risk by 50% within one year. Lowering LDL cholesterol by 1 mmol/L reduces heart attack risk by about 20%. Controlling blood pressure to below 130/80 mmHg provides significant benefit. These lifestyle and medication changes can shift you from moderate to low risk category.
What is a good HDL cholesterol level?
HDL (high-density lipoprotein) is protective — higher is better. HDL above 60 mg/dL is considered cardioprotective and reduces your Framingham score by 1 point. HDL below 40 mg/dL (men) or 50 mg/dL (women) is considered a risk factor. Exercise and moderate alcohol intake can raise HDL.
How does the Framingham score differ from the ACC/AHA Pooled Cohort Equations?
The original Framingham score uses a point table system and was developed in a mostly white New England population. The ACC/AHA Pooled Cohort Equations (2013 guidelines) include race-specific coefficients and have been validated in more diverse populations. Both estimate 10-year atherosclerotic CVD risk and guide statin therapy decisions.
Why do men and women use different point tables?
Women develop atherosclerotic cardiovascular disease roughly 7 to 10 years later than men on average, largely due to the protective effect of estrogen before menopause, so the Framingham point tables assign age points and cholesterol points differently by sex. For the same age and total cholesterol, a woman generally accrues fewer points than a man of the same age, but points from age rise more steeply for women at older ages as this protective gap narrows after menopause. Using a single unisex table would systematically overestimate risk in younger women and underestimate it in older women, which is why the original 1998 Wilson et al. Framingham publication and every version since has kept sex-specific scoring.
Can the Framingham score be used if I'm on statins or blood pressure medication already?
The Framingham score as calculated here estimates risk from your current, treated numbers, which understates your untreated baseline risk — a controlled blood pressure of 125 on medication does not mean your arteries never saw the higher pre-treatment pressure. The tool separately accounts for being on blood pressure medication by adding extra points at the same systolic reading, since treated hypertension carries somewhat higher residual risk than the same reading in someone who has never needed medication. If you are on a statin, discuss your pre-treatment LDL and total cholesterol history with your doctor, since risk calculators are generally most useful for treatment-naive patients deciding whether to start therapy.
How does a point total turn into a risk percentage?
The points are a scoring shorthand for a Cox proportional hazards model. Each risk factor category was assigned points in proportion to its regression coefficient, so adding points is equivalent to adding log-hazard contributions, and the final lookup table converts that sum back into an estimated ten-year probability. Because hazards multiply rather than add, the mapping is deliberately non-linear: an extra point near the bottom of the table moves the percentage barely at all, while one near the top can move it several points.
Why does the score use total cholesterol rather than LDL?
The Framingham point tables were published around total cholesterol and HDL because those two are measured directly and reliably, including on a non-fasting sample. LDL is often not measured at all but calculated, classically by the Friedewald equation as total cholesterol minus HDL minus triglycerides divided by five, which becomes unreliable when triglycerides are high. Using the measured values keeps the score reproducible across laboratories, even though treatment decisions afterwards are usually framed around LDL.
Why is smoking scored as a fixed number of points rather than by amount smoked?
The model carries smoking as a binary current-smoker variable, so a light smoker and a heavy smoker receive the same points. That reflects how the variable was recorded in the cohort rather than a claim that consumption does not matter; risk does rise with intensity and duration. It also means the score cannot represent recent quitters, whose risk falls over the years after stopping but who are no longer classified as current smokers. Pack-year history belongs in the clinical conversation alongside the score.
Why does Framingham Risk Calculator only accept ages between 20 and 79?
Risk equations are only valid across the range of the cohort they were fitted to, and the Framingham functions were derived in middle-aged adults; the 20 to 79 span used here comes from the published ATP III point tables, which is simply the range those tables are printed for. Below that range the ten-year risk is so low that the point table cannot discriminate usefully, and above it competing causes of death and the flattening effect of survivorship make extrapolation unreliable. Outside these bounds clinicians turn to lifetime risk framing or to tools fitted to older populations.
References
Reviewed for accuracy by Rahul Singh, Health & Wellness Specialist · Editorial policy
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