QRISK / ASCVD Risk Calculator

Estimate ten year cardiovascular risk from standard risk factors.

About QRISK / ASCVD Risk Calculator

Cardiovascular risk models are multiplicative, so risk factors compound rather than add. Age dominates the calculation, which is why absolute risk rises steeply even with unchanged risk factors. Heart age communicates risk more effectively than a percentage for many people, which is why official tools now report it alongside the risk figure.

Formula

QRISK / ASCVD Risk

Risk rises multiplicatively with age, blood pressure, cholesterol ratio, smoking and diabetes

cholesterol ratio: Total divided by HDL, a stronger predictor than either alone
heart age: The age at which someone with no risk factors would carry the same risk

Worked example

With the default values below, QRISK / ASCVD Risk Calculator returns Ten Year Cardiovascular Risk of 7.78%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Ageaccepts 25–84 years: 58 years
Sexone of Male, Female: Male
Systolic blood pressureaccepts 80–220 mmHg: 142 mmHg
Total cholesterolaccepts 2–12 mmol/L: 5.6 mmol/L
HDL cholesterolaccepts 0.3–4 mmol/L: 1.2 mmol/L
Current smokerone of Yes, No: No
Diabetesone of Yes, No: No

Results

Ten Year Cardiovascular Risk: 7.78%
Risk Band: Borderline risk
Total to HDL Cholesterol Ratio: 4.667
Approximate Heart Age: 62.7 years
Risk if Not Smoking: 7.78%

Step by step

1Values used
2QRISK / ASCVD Risk
3Ten Year Cardiovascular Risk= 7.78
4Risk Band= Borderline risk
5Total to HDL Cholesterol Ratio= 4.667
6Approximate Heart Age= 62.7 years
7Risk if Not Smoking= 7.78

Assumptions and limits

The result is derived only from the 7 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
This reproduces a published formula for educational and reference use only. It is not a diagnostic tool, does not account for individual clinical context, and must not be used to make or change treatment decisions. Clinical assessment by a qualified healthcare professional is always required. This is a simplified approximation, not the validated QRISK or ASCVD models, which require population-specific calibration and additional variables. Use the official tool for your region and discuss results with a clinician. Do not start or stop medication based on this estimate.
This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

This reproduces a published formula for educational and reference use only. It is not a diagnostic tool, does not account for individual clinical context, and must not be used to make or change treatment decisions. Clinical assessment by a qualified healthcare professional is always required. This is a simplified approximation, not the validated QRISK or ASCVD models, which require population-specific calibration and additional variables. Use the official tool for your region and discuss results with a clinician. Do not start or stop medication based on this estimate.

Frequently Asked Questions

How is QRISK / ASCVD Risk calculated?

Risk rises multiplicatively with age, blood pressure, cholesterol ratio, smoking and diabetes Cardiovascular risk models are multiplicative, so risk factors compound rather than add. Age dominates the calculation, which is why absolute risk rises steeply even with unchanged risk factors.

Why does QRISK / ASCVD Risk matter?

Heart age communicates risk more effectively than a percentage for many people, which is why official tools now report it alongside the risk figure.

What values do I need to enter?

This calculator takes 7 inputs: Age, Sex, Systolic blood pressure, Total cholesterol, HDL cholesterol, Current smoker, Diabetes. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.