Biochemistry unit converter — mg/dL, mmol/L, µmol/L
Type a result in any unit and the others update instantly. Useful when a result from another lab or country uses different units from the guidelines.
Carbohydrates
Glucose1 mmol/L = 18.02 mg/dL
Proteins
Total protein
Albumin
Caeruloplasminµmol/L assuming a molecular mass of about 132 kDa
Bilirubin
Total bilirubin1 mg/dL = 17.1 µmol/L
Direct (conjugated) bilirubin
Indirect (unconjugated) bilirubin
Lipids
Total cholesterolfactor 0.02586 (mg/dL → mmol/L)
LDL cholesterol
HDL cholesterol
Non-HDL cholesterol
Triglyceridesfactor 0.01129 (mg/dL → mmol/L)
Lipoprotein(a)approximation only (about 2.15 nmol/L per mg/dL) — guidelines advise against converting
Vitamins and iron
Vitamin D (25(OH)D)1 ng/mL = 2.496 nmol/L
Vitamin B12
Folate
Iron
This converter does not include that test.
How we convert
Mass units (mg/dL) are converted to molar units (mmol/L, µmol/L) using the molar mass of the compound: mmol/L = mg/dL × 10 ÷ molar mass. Results are rounded to about 4 significant digits.
Always use the reference range printed on your laboratory report — it depends on the assay.
Sources
- Kronenberg F, Mora S, Stroes ESG i in. Lipoprotein(a) in atherosclerotic cardiovascular disease and aortic stenosis: a European Atherosclerosis Society consensus statement. Eur Heart J 2022;43(39):3925–3946. doi.org
- Young DS. Implementation of SI units for clinical laboratory data. Ann Intern Med 1987;106(1):114–129. doi.org
- AMA Manual of Style, 11th ed. — SI Conversion Table (JAMA Network). www.amamanualofstyle.com
- IUPAC/IFCC. Compendium of terminology and nomenclature of properties in clinical laboratory sciences (Silver Book). 2016.
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This calculator is for education and does not replace a doctor’s assessment. Always interpret the result together with the history and examination.