Cholesterol Ratio Calculator: Non-HDL, TC/HDL, TG/HDL and LDL
A lipid panel gives you four numbers; the ratios between them say more about risk than any one alone. Non-HDL counts every plaque-forming particle, and the triglyceride to HDL ratio is a quick read on insulin resistance.
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Create a free accountFrequently asked questions
What is a good non-HDL cholesterol?
Below 3.9 mmol/L for the general population. Australian guidelines set lower targets for people at high cardiovascular risk, typically below 2.5 or 3.3 mmol/L depending on risk category.
What should the total cholesterol to HDL ratio be?
Below 4.5 is desirable; below 3.5 is optimal. The ratio is used in the Australian cardiovascular risk calculator.
What does the triglyceride to HDL ratio tell me?
In mmol/L units, below 0.9 is ideal and above 1.3 (about 3.0 in mg/dL units) suggests insulin resistance and small, dense LDL particles.
When is Friedewald LDL unreliable?
When triglycerides exceed 4.5 mmol/L, or the sample was not fasting. Labs then measure LDL directly or report non-HDL instead.
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Educational tool. Results depend on the accuracy of the inputs and the formulas cited; they do not replace your laboratory report or your doctor's interpretation.