What Does Your Cholesterol Ratio Mean?

Use this cholesterol ratio calculator to estimate your total cholesterol to HDL ratio from common lipid panel numbers. If you also enter LDL cholesterol, the calculator can estimate your LDL to HDL ratio.

Cholesterol ratios are sometimes used to add context to individual cholesterol numbers. They may help you understand how total cholesterol, HDL, and LDL relate to each other, but they do not diagnose heart disease or replace a clinician’s review.

Your result is one piece of the larger picture. Triglycerides, blood pressure, blood sugar, smoking history, age, family history, and other health conditions can all affect cardiovascular risk.

Total cholesterol

mg/dL

HDL cholesterol

mg/dL

LDL cholesterol (optional)

mg/dL

Cholesterol ratios

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Learn more about health topics related to this calculator.

Health conditions

Diabetes Hypothyroidism Non-alcoholic Fatty Liver Disease

Biomarkers

HDL Cholesterol LDL Cholesterol Triglycerides

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Atorvastatin Omega-3 Rosuvastatin

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Frequently Asked Questions

Answers to common questions about this page and how to use what you find here.

Sources

This calculator is for general education only and is not a diagnosis, treatment plan, or substitute for medical advice from a qualified healthcare professional.

To calculate your cholesterol ratio, divide total cholesterol by HDL cholesterol using values from the same lipid panel. For example, total cholesterol of 200 mg/dL and HDL of 50 mg/dL gives a ratio of 4.0. If LDL is available, LDL divided by HDL gives an LDL-to-HDL ratio.

A lower total cholesterol to HDL ratio is generally considered more favorable, but there is no single number that explains your full heart risk. Clinicians usually interpret the ratio along with LDL, HDL, triglycerides, blood pressure, age, diabetes status, smoking history, and family history.

Cholesterol ratio is not usually more important than LDL cholesterol for medical decisions. The ratio can add context, but LDL, non-HDL cholesterol, triglycerides, and sometimes apolipoprotein B may give more specific information about cholesterol-carrying particles linked with cardiovascular risk.

No, this cholesterol ratio calculator cannot diagnose high cholesterol or heart disease. It only estimates ratios from numbers you enter. A diagnosis or treatment plan depends on validated lab results, your full lipid panel, health history, medications, and overall cardiovascular risk.

HDL affects the cholesterol ratio because it is the denominator in the total cholesterol-to-HDL calculation. A higher HDL value can lower the ratio, while a low HDL value can raise it. However, HDL level alone does not guarantee protection from heart disease.

Your cholesterol ratio can change with diet, weight change, physical activity, smoking status, alcohol intake, medications, pregnancy, thyroid function, blood sugar control, and liver health. Temporary illness or non-fasting results may also affect parts of a lipid panel, especially triglycerides.

Use the numbers from one lipid panel, whether fasting or non-fasting, and avoid mixing results from different dates. Many cholesterol tests can be interpreted when non-fasting, but triglycerides may be more affected by recent meals. Follow the instructions from your lab or clinician.