Cholesterol Units Converter
Convert cholesterol values between mg/dL and mmol/L for total cholesterol, HDL, LDL, and triglycerides. Free online health converter with accurate formulas, comparison charts, and detailed breakdowns.
About This Calculator
Our Cholesterol Units Converter helps you convert cholesterol values between milligrams per deciliter (mg/dL) and millimoles per liter (mmol/L). This tool works for total serum cholesterol, high-density lipoproteins (HDL), low-density lipoproteins (LDL), and triglycerides — all with their appropriate conversion factors.
The conversion formulas used are medically accurate: for total cholesterol, HDL, and LDL, multiply mg/dL by 0.02586 to get mmol/L, or multiply mmol/L by 38.67 to get mg/dL. For triglycerides, the conversion factors are 0.01129 (mg/dL to mmol/L) and 88.57 (mmol/L to mg/dL). These factors are derived from the molecular weight of each substance and are recommended by the European Atherosclerosis Society and the European Federation of Clinical Chemistry and Laboratory Medicine.
Cholesterol is a waxy, fat-like substance found in your blood. While your body needs cholesterol to build healthy cells, high levels can increase your risk of heart disease and stroke. Regular monitoring of your lipid profile — including total cholesterol, HDL (good cholesterol), LDL (bad cholesterol), and triglycerides — is essential for cardiovascular health assessment.
Regional Notes
United States: The American Heart Association recommends adults aged 20 and older have their cholesterol checked every four to six years. Optimal total cholesterol is below 200 mg/dL. US labs typically report values in mg/dL.
United Kingdom: The NHS recommends routine cholesterol checks every 5 years for adults over 40 through the NHS Health Check program. UK labs report cholesterol in mmol/L. Optimal total cholesterol is below 5 mmol/L.
India: Lipid profiles are commonly reported in mg/dL. The Indian Council of Medical Research recommends regular cholesterol screening for adults over 30 with risk factors. Desirable total cholesterol is below 200 mg/dL.
Frequently Asked Questions
How do I convert cholesterol from mg/dL to mmol/L?
To convert total cholesterol, HDL, or LDL from mg/dL to mmol/L, multiply by 0.02586. For triglycerides, multiply by 0.01129. For example, total cholesterol of 200 mg/dL equals 5.17 mmol/L (200 × 0.02586).
How do I convert cholesterol from mmol/L to mg/dL?
To convert total cholesterol, HDL, or LDL from mmol/L to mg/dL, multiply by 38.67. For triglycerides, multiply by 88.57. For example, total cholesterol of 5.2 mmol/L equals approximately 201 mg/dL (5.2 × 38.67).
What is the difference between mg/dL and mmol/L?
mg/dL (milligrams per deciliter) and mmol/L (millimoles per liter) are two different units for measuring cholesterol concentration in blood. mg/dL is commonly used in the United States, while mmol/L is the standard unit in Canada, the United Kingdom, Europe, and Australia. The conversion factor differs because it accounts for the molecular weight of the cholesterol molecule.
What are normal cholesterol levels in mg/dL and mmol/L?
Optimal total cholesterol is below 200 mg/dL (5.18 mmol/L). HDL should be 60 mg/dL (1.55 mmol/L) or higher. LDL should be below 100 mg/dL (2.59 mmol/L). Triglycerides should be below 150 mg/dL (1.70 mmol/L). These thresholds apply in the US, UK, and India, though specific guidelines may vary slightly between countries.
Why do triglycerides use a different conversion factor?
Triglycerides have a different molecular weight than cholesterol, so the conversion factor between mg/dL and mmol/L is different. Total cholesterol, HDL, and LDL all use 38.67 (mg/dL to mmol/L conversion uses 0.02586), while triglycerides use 88.57 (mg/dL to mmol/L conversion uses 0.01129).
How often should I get my cholesterol checked?
The American Heart Association recommends adults aged 20 and older have their cholesterol checked every four to six years. In the UK, the NHS recommends cholesterol checks every 5 years for adults over 40. In India, yearly lipid profile tests are recommended for adults over 30, especially those with risk factors like diabetes, hypertension, or family history of heart disease.
Can I use this converter for medical diagnosis?
No. This converter is for educational and reference purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a healthcare provider to interpret your cholesterol levels and determine appropriate treatment.
What countries use mg/dL vs mmol/L for cholesterol?
The United States uses mg/dL (milligrams per deciliter) as the standard unit for cholesterol measurement. Canada, the United Kingdom, Australia, New Zealand, European countries, and most of the world use mmol/L (millimoles per liter). India commonly uses mg/dL, though both units may appear in clinical practice.