Last updated October 10, 2026 · Report an error
US labs commonly report cholesterol and triglyceride values in mg/dL, while most other countries report in mmol/L. This calculator converts between the two using the standard clinical chemistry conversion factors: cholesterol uses 38.67, while triglycerides use a different factor, 88.57, because the two molecules have different molar masses. This calculator is for general reference and educational purposes only — it is not a medical diagnosis. Consult a doctor or your lab's reference range for actual interpretation.
How it works
Select the substance (cholesterol or triglycerides) and the conversion direction, then enter the value. The tool divides by the factor to go from mg/dL to mmol/L, or multiplies to go from mmol/L to mg/dL.
- Enter substance.
- Enter conversion direction.
- Enter value.
- Click Calculate to see your results.
Examples
Total cholesterol of 200 mg/dL
200 / 38.67 = 5.17 mmol/L.
Who should use it
- Comparing lab results reported in different units (e.g. reading a US lab result while living abroad).
- Translating lipid panel values from published research into a locally understood unit.
Industry applications
- Clinical chemistry and lab reporting
- International patient care
Advantages
- Uses the standard, internationally recognized clinical chemistry conversion factors.
- Works in both directions for both cholesterol and triglycerides.
Limitations
- Reference ranges still need to be checked against the local lab's reporting units.
Common mistakes to avoid
- Using the cholesterol factor (38.67) to convert triglycerides, or vice versa.
- Assuming reference ranges are the same in both units without checking the lab's local range.
Best practices
- Always double-check which substance you are converting — cholesterol and triglycerides have different factors.
Tips
- When comparing lab results across countries, confirm both the units and the reference range used.