193.4
mg/dL
38.67
mg/dL per mmol/L
5
mmol/L
193.4
mg/dL
38.67
mg/dL per mmol/L
5
mmol/L
The Cholesterol Converter converts total cholesterol levels between mmol/L (millimoles per liter) and mg/dL (milligrams per deciliter). Cholesterol is one of the most important blood markers for cardiovascular health, and accurate unit conversion is essential when interpreting lab results from different countries or medical systems.
Like blood sugar, cholesterol is measured in different units depending on the country. The United States, Japan, and several other countries report cholesterol in mg/dL, while the United Kingdom, Canada, Australia, and most of Europe use mmol/L. This can create confusion when patients consult medical literature, receive treatment abroad, or communicate with healthcare providers in different systems.
The conversion factor for cholesterol is 38.67: 1 mmol/L = 38.67 mg/dL. This factor is derived from the molecular weight of cholesterol (C27H46O, molecular weight 386.65 g/mol). Since cholesterol has a different molecular weight than glucose, the conversion factor is different from the blood sugar conversion factor (18.0182).
Standard total cholesterol guidelines from the American Heart Association define three risk categories: Desirable is below 5.2 mmol/L (200 mg/dL), Borderline High is 5.2-6.2 mmol/L (200-240 mg/dL), and High is above 6.2 mmol/L (240 mg/dL). However, total cholesterol alone does not tell the complete story — the breakdown into LDL (bad cholesterol), HDL (good cholesterol), and triglycerides is equally important for assessing cardiovascular risk.
This converter includes a risk category indicator: 1 = Desirable, 2 = Borderline High, 3 = High. These categories are based on total cholesterol only and are for general reference. Your healthcare provider considers multiple factors including LDL, HDL, triglycerides, age, family history, and other risk factors when assessing your cardiovascular health.
The formula is: mg/dL = mmol/L x 38.67. The reverse: mmol/L = mg/dL / 38.67. The factor 38.67 is derived from cholesterol's molecular weight (386.65 g/mol). Risk categories (total cholesterol): 1 = Desirable (<5.2 mmol/L / <200 mg/dL), 2 = Borderline (5.2-6.2 / 200-240), 3 = High (>6.2 / >240).
The risk category is based on total cholesterol only and uses the standard American Heart Association thresholds. LDL cholesterol, HDL cholesterol, and triglycerides all use different optimal ranges and different conversion factors. The same 38.67 factor applies to LDL and HDL, but triglycerides use a different factor (88.57). A complete lipid panel interpretation requires evaluating all components together, including the total-to-HDL ratio. This tool provides general reference for unit conversion; always discuss results with your healthcare provider for proper clinical interpretation.
Inputs
Results
4.5 mmol/L = 174 mg/dL (Desirable)
Inputs
Results
5.8 mmol/L = 224 mg/dL (Borderline)
Multiply the mmol/L value by 38.67. For example, 5.0 mmol/L x 38.67 = 193.4 mg/dL. For a quick estimate, multiply by 39.
Total cholesterol below 5.2 mmol/L (200 mg/dL) is considered desirable. Borderline high is 5.2-6.2 mmol/L (200-240 mg/dL). High is above 6.2 mmol/L (240 mg/dL).
Each molecule has a different molecular weight. Cholesterol (386.65 g/mol) uses the factor 38.67, while glucose (180.16 g/mol) uses 18.0182. The conversion factor equals the molecular weight divided by 10.
LDL and HDL cholesterol use the same conversion factor as total cholesterol (x 38.67) because they are all cholesterol molecules. Triglycerides use a different factor: mmol/L x 88.57 = mg/dL.
HDL (high-density lipoprotein) is 'good' — higher is better (above 1.0 mmol/L or 40 mg/dL for men, 1.2 mmol/L or 50 mg/dL for women). LDL (low-density lipoprotein) is 'bad' — lower is better (below 3.0 mmol/L or 116 mg/dL ideally).
Adults should have a full lipid panel every 4-6 years starting at age 20, or more frequently if levels are abnormal or if you have risk factors (family history, diabetes, smoking, high blood pressure).
Yes. A heart-healthy diet (low in saturated fat, trans fat, and cholesterol; high in fiber, fruits, and vegetables), regular exercise (150+ minutes per week), maintaining a healthy weight, and not smoking can lower total cholesterol by 10-20% or more.
Triglycerides are another type of blood fat. Normal is below 1.7 mmol/L (150 mg/dL). Borderline high: 1.7-2.2 mmol/L (150-199 mg/dL). High: 2.3-5.6 mmol/L (200-499 mg/dL). Very high: above 5.6 mmol/L (500 mg/dL). Note: triglycerides use a different conversion factor (88.57).
The factor 38.67 is based on the molecular weight of cholesterol (386.65 g/mol). It is accurate to the precision of the molecular weight determination. Clinical labs may use slightly different factors (38.6-38.7) depending on their reference standards.
Traditional lipid panels require 9-12 hours of fasting. However, recent guidelines suggest that non-fasting lipid panels are acceptable for initial screening, as total cholesterol and HDL change minimally after eating. Triglycerides are most affected by fasting status.
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