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Cholesterol LDL Unit Converter
Low-Density Lipoprotein (LDL) cholesterol is famously known as “bad” cholesterol. It transports cholesterol from the liver to peripheral tissues. When present in excess, LDL particles can penetrate the arterial wall, oxidize, and initiate the formation of atherosclerotic plaques. This process is the primary driver of Coronary Artery Disease (CAD) and stroke.[Image of lipoprotein metabolism and reverse cholesterol transport]
LDL cholesterol is the primary target of lipid-lowering therapies (like statins). While traditionally calculated using the Friedewald equation, direct measurement is increasingly common. Guidelines for LDL targets have become more aggressive over time, especially for high-risk patients. Accurate unit conversion between the US standard (mg/dL) and the international standard (mmol/L) is essential for applying global clinical guidelines.
SI Units
RecommendedMillimoles per liter (Standard International).
Conventional Units
Clinical Context
Target Levels: For the general population, optimal LDL is < 100 mg/dL (2.6 mmol/L).
For patients with established cardiovascular disease or diabetes, targets are much lower, often < 70 mg/dL (1.8 mmol/L) or even < 55 mg/dL (1.4 mmol/L) in very high-risk groups. The conversion factor relies on the molecular weight of cholesterol: 1 mmol/L ≈ 38.67 mg/dL.
Clinical References
How to Use This Calculator
Follow these steps to get accurate clinical conversions instantly.
Enter Values
Input your laboratory results into the corresponding unit field (e.g., mg/dL). You can use either dot or comma decimals.
Automatic Conversion
The calculator works in real-time. As you type in one field, all other units (like mmol/L) are instantly updated.
Verify Units
Check the SI Units section. mmol/L is the standard unit in Canada and Europe.
Reset
Use the Clear button to reset all fields before starting a new calculation.
Frequently Asked Questions & Tips
This calculator only converts units. It does not calculate LDL from Total Cholesterol, HDL, and Triglycerides (that uses the Friedewald Formula).
Yes, fasting is typically required for accurate LDL measurement, especially if it is calculated, as triglycerides rise after meals.