Free, accurate cardiovascular risk calculators based on the latest medical evidence — helping people and clinicians understand heart disease risk.
PreventCalculator.com provides free, clinically-grounded cardiovascular risk calculators based on the American Heart Association's 2023 PREVENT equations and the ACC/AHA Pooled Cohort Equations. Our goal is to make validated cardiovascular risk assessment accessible to both healthcare professionals and the general public.
All calculators on this site are built on peer-reviewed, published equations and are intended for educational use. They are not a substitute for clinical judgment or professional medical advice.
The PREVENT™ (Predicting Risk of Cardiovascular Disease EVENTs) calculator was introduced by the American Heart Association in 2023. It represents a major advance over previous tools by:
Reference: Khan SS et al. Novel Prediction Equations for Absolute Risk Assessment of Total Cardiovascular Disease Incorporating Cardiovascular-Kidney-Metabolic Health. Circulation. 2023;148(24):1982–2004.
PreventCalculator.com hosts a full suite of validated cardiovascular risk tools. Whether you are a patient checking your long-term heart risk or a clinician triaging chest pain in the ED, there is a calculator here built for your clinical question.
These calculators answer the question: "What is this patient's risk of a heart attack, stroke, or heart failure over the next 10–30 years?" They are designed for stable outpatients without existing cardiovascular disease.
These tools focus specifically on myocardial infarction risk and general cardiac risk scoring, incorporating additional inputs like family history and lifestyle factors.
Unlike long-term prevention tools, the HEART Score is used in the Emergency Department to answer a completely different question: "Does this chest pain patient need to be admitted right now?" It is validated for acute triage, not long-term prevention.
These tools serve specific populations or clinical questions. The Framingham calculator is the standard of care in Canadian primary care. The MESA calculator adds coronary artery calcium scoring for patients in the borderline risk zone. The eGFR calculator helps you find your kidney function score — a required input for the PREVENT calculator.
The right calculator depends entirely on the clinical question:
PreventCalculator.com is an independent educational resource and is not affiliated with the American Heart Association (AHA), the American College of Cardiology (ACC), or any medical institution. The PREVENT™ name belongs to the American Heart Association. Our calculators implement the published equations for educational purposes. Always consult a qualified healthcare provider for medical decisions.