Cholesterol Risk Calculator - Lipid Profile and Risk Factors

📘 About the Cholesterol Risk

This calculator summarizes a lipid profile and several common cardiovascular risk factors. It is not a diagnosis and it does not produce a clinical 10-year cardiovascular event probability.

Non-HDL cholesterol is calculated as total cholesterol minus HDL cholesterol. General adult desirable levels commonly used for interpretation include total cholesterol below 200 mg/dL, LDL below 100 mg/dL, non-HDL below 130 mg/dL, and triglycerides below 150 mg/dL; HDL thresholds differ by sex.

The calculator also flags selected risk factors such as current smoking, diabetes, hypertension, family history and age. These factors can affect cardiovascular risk beyond the lipid numbers themselves.

🧮 Formula

Non-HDL cholesterol

Non-HDL = Total - HDL

Total cholesterol to HDL ratio

TC/HDL = Total / HDL

LDL to HDL ratio

LDL/HDL = LDL / HDL

Where

Non-HDL = Total cholesterol - HDL
Total/HDL ratio = Total cholesterol / HDL
LDL/HDL ratio = LDL / HDL

All cholesterol inputs are in mg/dL.

✏️ Worked example

Example lipid profile

You enter
Age	45 years
Sex	Male
Total Cholesterol	210 mg/dL
HDL Cholesterol	45 mg/dL
LDL Cholesterol	130 mg/dL
Triglycerides	175 mg/dL
Current Smoking	No
Diabetes	No
High Blood Pressure / Hypertension	Yes
Family History of Premature Heart Disease	No / Unknown

You get
Non-HDL Cholesterol	165
Total Cholesterol / HDL Ratio	4.66667
LDL / HDL Ratio	2.88889
Lipid Markers Outside General Desirable Range	3
Additional Risk Factors Present	2
LDL 190+ mg/dL Flag	0
Triglycerides 500+ mg/dL Flag	0

For total cholesterol 210, HDL 45, LDL 130 and triglycerides 175 mg/dL, the calculator derives non-HDL cholesterol and ratio values and flags the relevant markers.

Try this example →

🧭 How to use this calculator

What you enter

Age (years)For adults age 20 and above.
Sex
Total Cholesterol (mg/dL)Enter your latest total cholesterol result.
HDL Cholesterol (mg/dL)High-density lipoprotein cholesterol.
LDL Cholesterol (mg/dL)Low-density lipoprotein cholesterol.
Triglycerides (mg/dL)Enter the triglyceride result from the same lipid profile.
Current Smoking
Diabetes
High Blood Pressure / Hypertension
Family History of Premature Heart Disease

What you get

Non-HDL Cholesterol
Total Cholesterol / HDL Ratio
LDL / HDL Ratio
Lipid Markers Outside General Desirable Range
Additional Risk Factors Present
LDL 190+ mg/dL Flag
Triglycerides 500+ mg/dL Flag

💡 How to interpret the results

Use the lipid values together rather than relying on one number.
General adult desirable levels are total cholesterol below 200 mg/dL, LDL below 100 mg/dL, non-HDL below 130 mg/dL and triglycerides below 150 mg/dL.
HDL below 40 mg/dL in men and below 50 mg/dL in women is generally considered low.
An LDL of 190 mg/dL or higher or triglycerides of 500 mg/dL or higher deserves prompt discussion with a healthcare professional.

💡 Risk factors

Smoking, diabetes, hypertension, family history, age and other clinical factors can change cardiovascular risk.
This calculator does not combine these factors into a validated 10-year risk percentage.
For adults 30 to 79 without known cardiovascular disease, the AHA PREVENT equations are a separate clinician-oriented cardiovascular risk tool and require additional inputs such as systolic blood pressure, BMI and kidney function.

❓ Frequently asked questions

Does this calculator give my chance of a heart attack?

No. It summarizes cholesterol measurements and selected risk factors but does not calculate a validated cardiovascular event probability.

What is non-HDL cholesterol?

Non-HDL cholesterol is total cholesterol minus HDL cholesterol. It represents cholesterol carried by several atherogenic lipoproteins.

Is a high cholesterol result always dangerous?

Risk depends on the complete lipid profile and other factors such as age, blood pressure, diabetes, smoking, family history and previous cardiovascular disease.

What does an LDL of 190 mg/dL or more mean?

It is a very high LDL level and should be discussed promptly with a healthcare professional.

Can this replace a doctor's advice?

No. It is an educational calculator and should not be used to diagnose or choose medication.

❤️ Cholesterol Risk Calculator

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