Lab Unit Converter: mmol/L, mg/dL, µmol/L and More
Finnish and most European laboratories report results in SI units such as mmol/L and µmol/L, while many American sources and studies use mg/dL or ng/mL. This converter switches between the two for the most common blood tests, so you can compare your own result with what you read.
| Test | SI unit | Conventional unit | SI → conventional |
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Notes on the conversions
The factors are standard molecular-weight conversions. Cholesterol factors apply to total, LDL, HDL and non-HDL cholesterol alike. Urea is converted to blood urea nitrogen (BUN), which is how it is reported in the United States. Ferritin has the same number in µg/L and ng/mL. Converted results are rounded, so the last digit can differ slightly from a laboratory’s own report.
Reference ranges differ too
Converting the unit does not convert the reference range of another laboratory or country. Compare a converted value with the reference range printed on your own lab report.
Sources
This tool is based on the articles below and the studies cited in them:
- How to Read Blood Test Results
- Cholesterol in Athletes
- Creatinine in Athletes
- Vitamin D in Athletes
- Testosterone in Athletes
This tool is for general education. It does not interpret your own results, give personal recommendations or replace an assessment by your doctor.
