Lab unit converter
Updated · Methodology
About the conversion
You need to convert units when your results come from labs in different countries. Labs in Spain and the US report glucose, cholesterol and creatinine in mg/dL, while labs in Russia and the UK use mmol/L and µmol/L.
For most tests the factor comes from the molar mass of the substance: 1 mg/dL of glucose = 10 / 180.16 mmol/L. To convert HbA1c from NGSP percent to IFCC mmol/mol, use an equation, not a single factor. Labs do not convert insulin and prolactin by mass: pick one in the list and a note under it explains the factor.
The most common mix-up is urea versus BUN (blood urea nitrogen). They are different measures: BUN in mg/dL × 2.14 = urea in mg/dL. Compare the converted value with the reference range on the report from the lab that ran the test, because reference ranges depend on the lab and the method.
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