Unit converter: creatinine, urea, uric acid
Kidney tests in mg/dL, µmol/L and mmol/L, including blood urea nitrogen (BUN) to urea.
Kidney function
Creatinine1 mg/dL = 88.4 µmol/L
Urea
Blood urea nitrogen (BUN)urea (mg/dL) = BUN × 2.14
Uric acid1 mg/dL = 59.5 µmol/L
Uric acid, 24-hour urine
Ammonia
Electrolytes
Total calcium
Phosphate (inorganic phosphorus)
Magnesium
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
- 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.