HDL cholesterol mmol/L → mg/dL
Convert hdl cholesterol from mmol/L to mg/dL
Sources last checked: 2026-11-03
HDL cholesterol mmol/L → mg/dL
Convert hdl cholesterol from mmol/L to mg/dL
Converts units only; reference ranges depend on the laboratory, the assay and the patient.
What is the HDL cholesterol mmol/L → mg/dL?
This converter turns HDL cholesterol from mmol/L, used in UK, Scandinavian and Dutch reports and in many European guidelines, into mg/dL, the unit most German, Austrian, Turkish and US labs use. It divides by 0.0259, the cholesterol factor of the AMA Manual of Style SI table (equivalent to multiplying by about 38.61).
When to use it
- Entering an SI-reported HDL into a calculator or form that expects mg/dL
- Comparing an HDL value from an SI-reporting country with local results
- Reading SI-based papers when you think in mg/dL
When not to use it
- Values already in mg/dL — check the report's unit first; an HDL in mg/dL is a much larger number
- Interpreting the value: reference limits differ by sex, laboratory and guideline
How it is calculated
HDL-C (mg/dL) = HDL-C (mmol/L) ÷ 0.0259
Clinical pearls and limitations
- Converts units only; reference ranges depend on the laboratory, the assay and the patient.
- Small mmol/L differences matter: 0.1 mmol/L of HDL is roughly 4 mg/dL.
- Some sources multiply by 38.67 (from the molar mass 386.7 g/mol); the result differs from dividing by 0.0259 by well under 1 mg/dL for HDL.
- If you need non-HDL cholesterol in mg/dL, subtract in mmol/L first and convert once.
- Very high HDL values can occur for genetic or other reasons and are not automatically protective; interpretation belongs to the clinical context.
Frequently asked questions
How do I convert HDL from mmol/L to mg/dL?
Divide by 0.0259. For example, 1.0 mmol/L ÷ 0.0259 = 38.6, about 39 mg/dL.
What is 1.5 mmol/L HDL in mg/dL?
1.5 ÷ 0.0259 = 57.9, about 58 mg/dL.
Can I use the same factor for total cholesterol?
Yes. Total, LDL, HDL and non-HDL cholesterol all use the cholesterol factor.
Evidence and guidelines
Have a follow-up question?
Medelix answers clinical questions from current guidelines and studies — every statement with its source.
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<p><a href="https://medelix.ai/en/calculators/hdl-cholesterol-mmol-l-to-mg-dl">HDL cholesterol mmol/L → mg/dL calculator by Medelix</a></p>For healthcare professionals and medical students. These tools support, and do not replace, clinical judgement. Always check results against the original source and your local protocols.