Lab Result Unit Converter

Convert lab results between US conventional units and SI units: cholesterol, triglycerides, glucose, creatinine, urea, uric acid, bilirubin, calcium, vitamin D and more.

Educational use only. Tool outputs have important limitations and cannot replace an individual assessment by an appropriately qualified healthcare professional.

Conversion factors

Test	Conventional	Multiply by	SI
Glucose	mg/dL	0.05551	mmol/L
Cholesterol (total, LDL, HDL)	mg/dL	0.02586	mmol/L
Triglycerides	mg/dL	0.01129	mmol/L
Creatinine	mg/dL	88.4	µmol/L
Urea nitrogen (BUN) → urea	mg/dL	0.357	mmol/L
Uric acid	mg/dL	59.48	µmol/L
Bilirubin	mg/dL	17.1	µmol/L
Calcium	mg/dL	0.2495	mmol/L
Phosphorus (phosphate)	mg/dL	0.3229	mmol/L
Vitamin D (25-hydroxy)	ng/mL	2.496	nmol/L
Haemoglobin	g/dL	10	g/L

Frequently asked questions

Why do lab results come in different units?

The United States mostly reports "conventional" units such as mg/dL, while the United Kingdom, Europe, Australia and many other countries use SI units such as mmol/L or µmol/L. The underlying amount is the same; only the unit differs.

How is the conversion calculated?

For a substance reported in mg/dL, the value in mmol/L is the mg/dL value multiplied by 10 and divided by the substance’s molar mass. For example, cholesterol has a molar mass of about 386.65 g/mol, so 200 mg/dL is about 5.17 mmol/L.

Can I compare my result with a range from another country?

Only after converting to the same unit, and even then reference ranges differ between laboratories and methods. Use the range printed on your own report and ask your clinician what your result means for you.