Cholesterol: mg/dL to mmol/L
Convert Cholesterol between mg/dL and mmol/L — Total, LDL and HDL cholesterol are reported in mg/dL in the US and mmol/L elsewhere, all using the same molar-mass factor. Type in either box to convert both ways.
Cholesterol conversion table (mg/dL to mmol/L)
| Cholesterol (mg/dL) | Cholesterol (mmol/L) |
|---|---|
| 120 mg/dL | 3.10361 mmol/L |
| 150 mg/dL | 3.87951 mmol/L |
| 170 mg/dL | 4.39678 mmol/L |
| 190 mg/dL | 4.91405 mmol/L |
| 200 mg/dL | 5.17268 mmol/L |
| 240 mg/dL | 6.20722 mmol/L |
| 260 mg/dL | 6.72448 mmol/L |
| 300 mg/dL | 7.75902 mmol/L |
How to convert Cholesterol from mg/dL to mmol/L
To convert Cholesterol, multiply mg/dL by 0.02586 (or divide by 38.67) — cholesterol has a molar mass of 386.65 g/mol. For example, 1 mg/dL equals 0.0258634 mmol/L. The converter above runs the exact factor at full precision and updates as you type; the swap button flips the direction.
Frequently asked questions
How do you convert Cholesterol from mg/dL to mmol/L?
Multiply mg/dL by 0.02586 (or divide by 38.67) — cholesterol has a molar mass of 386.65 g/mol. For example, 1 mg/dL is 0.0258634 mmol/L. The converter above does this instantly and works both ways — type a value in either box. It uses the exact factor at full precision, so the result matches published clinical conversions.
What is a normal Cholesterol level?
Desirable total cholesterol is under 200 mg/dL (5.2 mmol/L); 240 mg/dL (6.2 mmol/L) or above is high. The same factor applies to LDL and HDL. These are general adult figures only — the reference interval on your own lab report is what applies to you, and it can differ by lab, method, age and sex. The conversion table above runs from 120 to 300 mg/dL, or 3.10361 to 7.75902 mmol/L, so a range quoted in either system can be lined up against your own figure.
Why is Cholesterol reported in different units?
Total, LDL and HDL cholesterol are reported in mg/dL in the US and mmol/L elsewhere, all using the same molar-mass factor. The two systems describe the same measurement, so a value converts exactly from one to the other with no loss of meaning — only the units and the number change. That is why guidelines, journals and lab reports from different countries quote different numbers for the same Cholesterol result. The two boxes above are labelled mg/dL and mmol/L, so you can read a value in whichever system your own report uses.
Is this Cholesterol converter accurate and free?
Yes — this Cholesterol converter is both accurate and free. It applies the standard, published conversion factor at full double precision in your browser, with nothing uploaded or stored, and there is no sign-up or usage limit. It converts units only and does not interpret or diagnose results.
This is a unit-conversion reference tool, not a diagnosis or medical advice. Reference intervals are general adult guides that vary by laboratory, method and individual — always read your result against the range printed on your own report and discuss it with a qualified healthcare professional.
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