❤️   Health Tools · Cardiovascular Risk

Heart Attack and Stroke Risk Calculator

Estimate your 10-year risk of heart attack and stroke using the classic ACC/AHA ASCVD Pooled Cohort Equations. Doctor-reviewed. Free tool.

❤️ What is this tool?
This tool estimates your 10-year risk of heart attack or stroke using the ACC/AHA ASCVD Pooled Cohort Equations. You will need:
  • Your most recent total cholesterol and HDL cholesterol from a lipid profile
  • Your systolic blood pressure (the top number)
  • Whether you have diabetes and whether you smoke
Best validated for adults aged 40–79. Accepts cholesterol in mg/dL or mmol/L. Uses the classic ACC/AHA Pooled Cohort Equations (2013).
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EligibilityRisk FactorsYour Result
Can this calculator be used for you?
Please answer a few questions first. This ensures the calculator is appropriate for you and that your result is interpreted correctly.
⛔ Age too young for this calculator
This calculator is not validated for people under 20 years of age. Please focus on lifestyle risk factors — healthy diet, exercise, avoiding smoking, and monitoring blood pressure and blood sugar.
⚠️ Note on age: This calculator is mainly validated for adults aged 40–79. For ages 20–39, the result is a rough estimate only and may not fully reflect cardiovascular risk. Use as a general guide and discuss with your doctor.
⚠️ Note on age: This calculator is mainly validated for adults aged 40–79. For ages above 79, results may be less accurate. Discuss the result with your doctor.
Have you previously been diagnosed with or treated for any of the following?
  • Heart attack (myocardial infarction)
  • Stroke or TIA (transient ischaemic attack / mini-stroke)
  • Coronary artery disease
  • Coronary stent (angioplasty / PCI)
  • Heart bypass surgery (CABG)
  • Peripheral arterial disease (PAD)
  • Carotid artery disease
⛔ This calculator is not suitable for you
The ASCVD calculator is designed for primary prevention — people who have not yet had a cardiovascular event. Because you already have established cardiovascular disease, your risk assessment and treatment are guided by secondary prevention principles, which are different. Please consult your doctor directly.
Are you currently pregnant?
This calculator has not been validated during pregnancy. The result should be interpreted with caution and discussed with your doctor.
Have you been told your LDL cholesterol is ≥190 mg/dL (≥4.9 mmol/L), or that you may have familial hypercholesterolaemia (FH)?
Important: When LDL ≥190 mg/dL (≥4.9 mmol/L), guidelines recommend considering statin therapy regardless of the calculated ASCVD score. The calculated score may underestimate true risk. Medical review is recommended.
Your risk factors
Enter values from your most recent blood tests and medical check-up.
The ASCVD equations were validated using White American and African American data. Sri Lankan and South Asian users: select White / Other — a South Asian caution note will appear with your result.
Please select a group.
From your most recent lipid profile. Most labs report in mg/dL — check your report for the unit shown next to the number.
Please enter a valid total cholesterol value.
The "good" cholesterol. Found on your lipid profile. Most labs report in mg/dL.
Please enter a valid HDL cholesterol value.
The top number in your blood pressure reading. Use your most recent measurement.
Please enter a valid systolic blood pressure value.
Are you currently taking any medicine for high blood pressure?
Have you been diagnosed with type 1 or type 2 diabetes?
Are you a current smoker?
Your 10-Year ASCVD Risk
Values You Entered
Estimated 10-Year ASCVD Risk
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ℹ️ Note: Newer AHA PREVENT equations (2023) are available — they are race-free, cover ages 30–79, and include kidney and metabolic factors. However, this calculator uses the classic ACC/AHA ASCVD Pooled Cohort Equations (2013), which remain widely recognised and used in clinical practice.
🌏 Important for South Asian / Sri Lankan users
This calculator was developed using mainly White and African American population data. South Asians, including Sri Lankans, may develop cardiovascular disease at lower ages and lower risk scores. Your actual risk may therefore be higher than this estimated score. Always discuss this result with your doctor.
🚨 This calculator is not for emergencies
If you have chest pain, severe shortness of breath, profuse sweating, sudden weakness or numbness on one side of the body, sudden slurred speech, or fainting — do not use this calculator. Seek emergency medical care immediately.
Additional South Asian metabolic risk factors
These factors are common in South Asians and may increase cardiovascular risk beyond the calculated ASCVD score. Tick any that apply to you.
⚠️ Note: These metabolic risk factors may increase your actual cardiovascular risk beyond the calculated ASCVD score. Please discuss these with your doctor — they may influence prevention decisions even at lower calculated risk levels.
Dr. Seneth Gajasingha
Medically Reviewed By
Dr. Seneth Gajasingha
MBBS (Col) · MD (Col) · SLMC No. 27329
This tool uses the ACC/AHA ASCVD Pooled Cohort Equations (2013). Results are for educational guidance only and do not replace clinical assessment.
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Sineth Hospitals — Rattanapitiya, Boralasgamuwa
Get a full lipid profile, blood pressure check, and cardiovascular risk assessment. Our doctors can review your ASCVD score and guide you on prevention, lifestyle, and treatment.
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Heart Attack and Stroke Risk — ASCVD Explained

This calculator estimates your 10-year risk of a major cardiovascular event. Understanding what the result means can help guide better decisions about prevention.

What is ASCVD?

ASCVD stands for Atherosclerotic Cardiovascular Disease — disease caused by the buildup of fatty plaques inside artery walls (atherosclerosis). This includes heart attack, coronary heart disease death, and stroke.

What the Percentage Means

Your result is a percentage. A result of 10% means that among 100 people with the same risk factors, about 10 may develop a heart attack or stroke within the next 10 years. It is a statistical estimate — not a diagnosis or a guarantee.

Risk Categories

10-Year ASCVD RiskCategoryWhat it means
Less than 5%Low RiskLow likelihood of a cardiovascular event. Focus on maintaining a healthy lifestyle.
5% to less than 7.5%Borderline RiskBorderline risk. Lifestyle changes are important. Discuss with your doctor.
7.5% to less than 20%Intermediate RiskIntermediate risk. Medical review recommended — your doctor may discuss statin therapy.
20% or higherHigh RiskHigh risk. Medical management including cholesterol and blood pressure treatment is typically recommended.

Cholesterol Units — mg/dL vs mmol/L

Cholesterol can be reported in two units. mg/dL is the international standard and the most commonly used unit globally and in Sri Lanka. mmol/L is used by some laboratories. This calculator accepts both — always select the unit shown on your report. A value of 200 mg/dL equals approximately 5.2 mmol/L.

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Frequently Asked Questions

Common questions about the ASCVD risk calculator and cardiovascular risk, answered by Sineth Hospitals.

It estimates your 10-year statistical probability of developing a heart attack or stroke based on your risk factors. It does not predict whether any individual will definitely have a heart attack. The result is a population-based estimate, not a personal diagnosis.
No. This calculator is for primary prevention — people who have not yet had a cardiovascular event. If you already have heart disease, your risk management should be guided by secondary prevention principles with your doctor.
The classic ASCVD Pooled Cohort Equations were validated for adults aged 40–79. For ages 20–39 the calculator provides a rough estimate only. Younger adults should focus on modifiable risk factors — not smoking, healthy weight, regular exercise, healthy diet, blood pressure and blood sugar control.
The original equations were developed using White and African American populations. South Asians, including Sri Lankans, are known to develop cardiovascular disease at lower ages and lower risk factor levels than these equations predict. This means the calculator may underestimate true risk. Doctors may adjust the estimated risk upward for South Asian patients.
You need a recent lipid profile test to use this calculator accurately. A fasting lipid profile measuring total cholesterol, LDL, HDL, and triglycerides is available at most hospitals and laboratories in Sri Lanka. If you do not have one, this is a good reason to get tested.
The newer AHA PREVENT equations (2023) are race-free, work for adults aged 30–79, and include kidney function and metabolic syndrome factors for a more complete picture. They may become more widely adopted. However, the classic ASCVD Pooled Cohort Equations used here remain the standard reference in many guidelines and clinical settings worldwide.
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Medical Disclaimer
This tool is for general educational purposes only and does not replace professional medical advice, diagnosis, or treatment. The ASCVD result is a statistical estimate and may not accurately reflect individual cardiovascular risk, especially in South Asian populations. Always consult your doctor for interpretation and personalised medical advice.