BP LogPREVENT heart risk calculator
Estimate 10-year and 30-year risk of cardiovascular disease, heart attack and stroke (ASCVD), and heart failure with the AHA PREVENT equations used by the 2025 blood pressure guideline.
Estimate your PREVENT risk
For adults 30 to 79 without known heart disease or stroke. Use your most recent lab results and an average of home readings for blood pressure.
Range 30 to 79
Range 130 to 320
Range 20 to 100
Range 90 to 180
Range 18.5 to 39.9
Range 15 to 140, from a blood test (mL/min/1.73m²)
Fill in every field to see your estimates.
A population estimate for people like you, not a prediction for you. Risk bands follow the 2025 ACC/AHA blood pressure guideline for the 10-year total CVD estimate.
What the numbers mean
Each percentage is the share of people with numbers like yours who would be expected to have that event over the next 10 or 30 years. A 10-year risk of 6% means about 6 in 100 similar people, not a forecast for you personally. Risk estimates are a starting point for a conversation with your clinician, who knows your full history.
- Total cardiovascular disease: heart attack, stroke or heart failure.
- ASCVD (atherosclerotic cardiovascular disease): heart attack or stroke.
- Heart failure: the heart not pumping or filling as well as it should.
Risk bands
The bands apply to the 10-year total cardiovascular disease estimate, following the 2025 ACC/AHA blood pressure guideline.
| Band | 10-year total CVD risk |
|---|---|
| Low | under 5% |
| Borderline | 5% to under 7.5% |
| Intermediate | 7.5% to under 20% |
| High | 20% or more |
How it is calculated
This is the PREVENT base model: sex-specific logistic equations using age, total and HDL cholesterol, systolic blood pressure, BMI, eGFR, diabetes, current smoking, and whether you take blood pressure medicine or a statin. The coefficients come from the paper’s supplement, and the code is tested against published example cases. Each input must sit inside the range the equations were built on; the calculator says which one is outside.
Cholesterol in mmol/L is converted to mg/dL by multiplying by 38.67. The 30-year estimates apply to ages 30 to 59. PREVENT is for people without known heart disease or stroke; if you have had either, your risk is already considered high and these equations do not apply.
Common questions
What is the PREVENT calculator?
PREVENT is a set of equations from the American Heart Association, published by Khan and colleagues in Circulation in 2024. It estimates the chance of cardiovascular disease over 10 and 30 years for adults 30 to 79 without known heart disease, and it replaced the older pooled cohort equations in the 2025 blood pressure guideline.
How is PREVENT different from the old ASCVD risk calculator?
PREVENT adds kidney function (eGFR) and BMI, drops race from the equations, and estimates heart failure risk as well as heart attack and stroke. It was built on a much larger, more recent group of US adults.
What 10-year risk is considered high?
For the 10-year total cardiovascular disease estimate, this page labels under 5% as low, 5% to under 7.5% as borderline, 7.5% to under 20% as intermediate, and 20% or more as high. In the 2025 guideline, a risk of 7.5% or more is one of the factors in deciding when to start blood pressure medicine for stage 1 hypertension.
Why can't I see a 30-year estimate?
The 30-year equations were developed for ages 30 to 59, so the calculator shows them only in that age range.
Which blood pressure should I enter?
Your usual systolic (top) number. An average of home readings, like the one from the 7-day home average tool, is a better estimate than one office reading.
- Khan SS, et al. Development and Validation of the American Heart Association's PREVENT Equations (Circulation, 2024;149:430-449): Sex-specific equations for 10-year and 30-year total CVD, ASCVD and heart failure risk in adults 30 to 79 without known cardiovascular disease; 30-year estimates for ages 30 to 59; input ranges
- Jones DW, et al. 2025 AHA/ACC/AANP/AAPA/ABC/ACCP/ACPM/AGS/AMA/ASPC/NMA/PCNA/SGIM Guideline for the Prevention, Detection, Evaluation and Management of High Blood Pressure in Adults (Circulation, 2025): Blood pressure categories (normal under 120/80, elevated 120 to 129 and under 80, stage 1 130 to 139 or 80 to 89, stage 2 140 or 90 and higher); the higher category counts when the two numbers disagree; severe hypertension above 180/120; PREVENT for risk estimation
The free iPhone app times two readings a minute apart, averages them, keeps your morning and evening numbers apart, and builds a report for your doctor.
Other ways to track: desktop, Excel and printable logs