How to Use the Cholesterol Unit Converter
Select the measurement type (Total Cholesterol, LDL, HDL, or Triglycerides), enter the value, and choose the unit. The converter shows both mg/dL and mmol/L and provides an ACC/AHA-based assessment for reference. This tool does not replace medical advice.
Conversion Factors
Total cholesterol, LDL, and HDL: mmol/L = mg/dL ÷ 38.67 (based on cholesterol molecular weight of 386.65 g/mol). Triglycerides: mmol/L = mg/dL ÷ 88.57 (based on average triglyceride molecular weight). The different factors reflect the distinct molecular weights of these lipid types.
ACC/AHA Reference Ranges
Total cholesterol: below 200 mg/dL (5.17 mmol/L) desirable; 200–239 borderline high; 240+ high. LDL: below 100 mg/dL (2.59 mmol/L) optimal; 100–129 near optimal; 130–159 borderline high; 160+ high. HDL: 60 mg/dL (1.55 mmol/L) or above is cardioprotective; below 40 mg/dL increases CVD risk. Triglycerides: below 150 mg/dL (1.69 mmol/L) normal.
Unit Usage by Country
The US uses mg/dL; the UK, Canada, Australia, and most European countries use mmol/L. When reviewing lipid panels from international labs or reading global cardiovascular guidelines, always verify the unit before comparing results.
Frequently Asked Questions
Reduce saturated fat (red meat, butter, full-fat dairy) and eliminate trans fats. Increase soluble fiber (oats, beans, vegetables) and omega-3 sources (fatty fish, walnuts). Regular aerobic exercise also raises HDL. If levels remain high, consult your doctor about medication options like statins.
Total cholesterol and HDL can be measured without fasting. However, triglycerides and calculated LDL are affected by recent meals, so a 9–12 hour fast is required for a full lipid panel. Follow your healthcare provider's instructions before the test.