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Heart Disease Risk Calculator

Estimate your 10-year risk of cardiovascular disease with the Framingham general CVD equation, and see your heart age. Enter your age, sex, cholesterol, HDL, blood pressure, smoking and diabetes status. Educational use only.

Last updated:

Sex
years

30 to 74

mmHg

The top number of your reading

Taking blood pressure medicine?
Current smoker?
Diabetes?
Enter your values to see the result.
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How to use the Heart Disease Risk Calculator

  1. Select your sex and enter your age (30 to 74).
  2. Enter total and HDL cholesterol from a recent blood test, in mg/dL or mmol/L.
  3. Enter your systolic blood pressure and whether you take medicine for it.
  4. Answer the smoking and diabetes questions.
  5. Read your 10-year risk and heart age, then use the what-if table to see which changes matter most.

How the Framingham 10-year risk is calculated

The model adds up weighted natural logarithms of your risk factors and converts the total into a probability:

Risk = 1 − S0exp(Σβx − mean)

FactorMen (β)Women (β)
ln(age)3.061172.32888
ln(total cholesterol)1.123701.20904
ln(HDL cholesterol)−0.93263−0.70833
ln(systolic BP), untreated1.933032.76157
ln(systolic BP), treated1.998812.82263
Current smoker0.654510.52873
Diabetes0.573670.69154
Baseline survival S0 (10 years)0.889360.95012
Mean of Σβx23.980226.1931

Source: D'Agostino RB Sr et al., "General cardiovascular risk profile for use in primary care: the Framingham Heart Study", Circulation 2008. Cholesterol values are in mg/dL; the calculator converts mmol/L by multiplying by 38.67.

Risk factors you can change

  • Smoking: stopping removes the smoking term entirely, one of the biggest single drops in the model.
  • Blood pressure: the systolic term carries a large weight, so even a 10–15 mmHg reduction makes a visible difference.
  • HDL and total cholesterol: diet, activity, weight and, when prescribed, medicine all affect these.
  • Diabetes control: the model only records yes or no, but good control lowers real-world risk.

Use the what-if table above to see how each change would move your estimate. The figures are a starting point for a conversation with your doctor, not a treatment plan.

Frequently asked questions

What does a 10-year heart disease risk mean?

It is the estimated chance of having a cardiovascular event, such as a heart attack, stroke, heart failure or peripheral artery disease, within the next 10 years. A 12% risk means that about 12 out of 100 people with the same numbers would have an event.

Which Framingham equation does this use?

It uses the general cardiovascular disease risk equation published by D'Agostino and colleagues in Circulation in 2008, based on the Framingham Heart Study. It predicts all major CVD events, not only coronary heart disease, using sex-specific formulas.

What is heart age?

Heart age, or vascular age, is the age of a person of the same sex whose risk factors are all normal (total cholesterol 180 mg/dL, HDL 45 mg/dL, untreated systolic BP 125, no smoking or diabetes) and who has the same predicted risk as you. A heart age above your real age signals extra risk.

What counts as low, intermediate or high risk?

In Framingham-based guidance, under 10% is usually called low risk, 10% to 20% intermediate and 20% or more high risk. Guidelines differ between countries and organizations, so your doctor may use other cutoffs.

Why does age raise the risk so much?

Age is the strongest single predictor in the model because blood vessels change over time. That is why the same cholesterol and blood pressure give a much higher risk at 65 than at 45, and why risk factors are worth improving early.

Who should not rely on this calculator?

It is not designed for people who already have heart disease or have had a stroke, people under 30 or over 74, or people with very high cholesterol from a genetic condition. It was developed mostly in white US adults and may over- or underestimate risk in other groups.

Is this a medical diagnosis?

No. It is an educational estimate based on a population model. Only a health professional can assess your personal risk, which may include other tests, family history and newer calculators such as the AHA PREVENT equations.

Are all the tools on FreeToolCabin tested for quality and accuracy?

Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.

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