Total Cholesterol Unit Converter

In short Total Cholesterol is reported in mg/dL in some countries and mmol/L in others, and the two are related by a fixed factor: 1 mg/dL = 0.0258629 mmol/L, so to go the other way you divide by 38.6654. 150 mg/dL is 3.9 mmol/L; 200 mg/dL is 5.2 mmol/L; 240 mg/dL is 6.2 mmol/L. The factor is not arbitrary — it comes from the molar mass, because cholesterol has a molar mass of 386.65 g/mol, and that is why every analyte has its own factor rather than one shared conversion. The same factor applies to total, HDL and LDL cholesterol, because all three measure the same molecule in different carriers. Triglycerides do not share it — they are a much larger molecule and need their own factor, which is why converting a whole lipid panel with one number gets the last line wrong. This converts units. It does not interpret results, does not compare your value against a reference interval, and is not a substitute for the clinician who ordered the test — reference intervals differ between laboratories, methods and populations.