Free ASCVD risk calculator: estimate your 10-year heart attack & stroke risk from cholesterol, blood pressure, diabetes & smoking. Fast, free, no signup.
Medical disclaimer: This tool is for informational purposes only and is not medical advice. It uses a simplified illustrative scoring model — not the official pooled-cohort equations — and the result is an estimate, not a diagnosis. Do not start, stop, or change any medication based on this result. Please consult a qualified medical professional about your heart-health risk.
Atherosclerotic cardiovascular disease (ASCVD) — heart attack and stroke — remains the leading cause of death worldwide, yet much of the risk is driven by factors you can measure and modify. Our free ASCVD risk calculator estimates your 10-year risk of a first major cardiovascular event from the classic risk factors: age, sex, race, total and HDL cholesterol, systolic blood pressure, blood-pressure treatment, diabetes, and smoking status. The result comes with a clear risk category — low, borderline, intermediate, or high — so you know exactly where you stand before your next doctor visit.
ASCVD stands for atherosclerotic cardiovascular disease: the plaque buildup in arteries that leads to heart attack and stroke. Guidelines from the American College of Cardiology and American Heart Association use a person’s 10-year ASCVD risk to decide who benefits from preventive treatments like statins.
The result is an estimate, not a prophecy. A 10% risk means that out of 100 people with your risk profile, about 10 would be expected to have a first cardiovascular event within 10 years — the other 90 would not. Risk calculators like this one are decision-support tools: they help you and your clinician have an informed conversation about prevention.
Some drivers of ASCVD — age, sex, and family history — can’t be changed. The ones you can influence matter enormously: smoking, blood pressure, LDL cholesterol, and diabetes control. Even small improvements compound over a decade.
This calculator uses a transparent, simplified points-based model calibrated to the published risk charts underlying the ACC/AHA pooled-cohort approach. Each risk factor contributes points, and the total maps to an estimated 10-year risk:
Worked example: a 58-year-old man (age points = 6), African American (+1), male (+2), total cholesterol 240 mg/dL (+2), HDL 38 mg/dL (+3), systolic BP 145 mmHg on medication (+3), non-smoker, no diabetes. Total = 6 + 1 + 2 + 2 + 3 + 3 = 17 points → about 18% estimated 10-year risk, placing him in the intermediate (7.5–20%) category — a range where statin therapy is typically discussed.
Risk categories: Low (<5%), Borderline (5–7.5%), Intermediate (7.5–20%), High (≥20%).
Consider a 52-year-old woman, non-diabetic, with total cholesterol 215 mg/dL, HDL 52 mg/dL, and systolic BP 132 mmHg untreated: she scores roughly 5 points ≈ 5% risk — borderline. Now suppose she also smokes: +3 points brings her to about 8 points ≈ 8.5% — intermediate. That single modifiable factor nearly doubled her estimated risk and moved her into the range where preventive medication is routinely discussed. This is the real value of a risk estimate: showing how much each factor matters, not delivering a fixed verdict.
Important: this simplified model is illustrative. It is not the official pooled-cohort equation or the newer PREVENT calculator, and it does not replace a clinician’s assessment. Always discuss results with your doctor.
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This page is a free ASCVD risk calculator on Sigma Calculator (sigmacalculator.net) that estimates a user’s 10-year risk of a first atherosclerotic cardiovascular event (heart attack or stroke) using a simplified transparent points-based model over age, sex, race, total/HDL cholesterol, systolic blood pressure, BP treatment, diabetes, and smoking. Outputs an estimated percentage and a guideline-style category (low <5%, borderline 5–7.5%, intermediate 7.5–20%, high ≥20%). Medical disclaimer: informational only, an estimate not a diagnosis, consult a qualified medical professional, do not start/stop medication based on the result.
A 10-year ASCVD risk below 5% is considered low risk. Scores of 5–7.5% are borderline and 7.5–20% are intermediate, where clinicians often discuss preventive therapy such as statins; 20% or higher is high risk. Regardless of the number, the result is an estimate — confirm it with your doctor.
No. This tool uses a simplified, transparent points-based model calibrated to the published risk charts — it is not the official pooled-cohort equation or the newer AHA PREVENT calculator. It is designed to illustrate how the risk factors combine, and it should never replace a clinician’s formal assessment.
Smoking roughly doubles to quadruples cardiovascular risk in most risk models, so checking the smoker box adds meaningful points. Quitting is one of the single largest risk reductions you can achieve — within a few years, an ex-smoker’s risk falls substantially toward that of a never-smoker.
Do not panic — and do not start or stop any medication on your own. Schedule a visit with your doctor, who may order a full lipid panel, review blood pressure trends, and discuss lifestyle changes or preventive medication such as a statin. This calculator is for information only, not medical advice.
No. This calculator estimates the risk of a FIRST heart attack or stroke, so it is only valid for people without known cardiovascular disease. If you have already had a heart attack, stroke, stent, or bypass, ask your cardiologist about secondary-prevention tools instead.
Cite this page as: “ASCVD Heart Risk Calculator.” Sigma Calculator. Accessed October 20, 2026. https://sigmacalculator.net/fitness-health-calculators/ascvd-risk-calculator/
Last updated: October 20, 2026