Glucose Conversion Formula:
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Glucose levels can be measured in different units worldwide. The most common units are mmol/L (millimoles per liter) used in many countries and mg/dL (milligrams per deciliter) used primarily in the United States. This calculator provides quick and accurate conversion between these two units.
The conversion uses a simple mathematical formula:
Where:
Explanation: The conversion factor of 18 is derived from the molecular weight of glucose (180 g/mol) and the unit conversion between deciliters and liters.
Details: Accurate glucose measurement is essential for diabetes management, diagnosis of hypoglycemia and hyperglycemia, and monitoring treatment effectiveness. Proper unit conversion ensures consistent interpretation of results across different measurement systems.
Tips: Enter your glucose value in mmol/L and click "Convert" to get the equivalent value in mg/dL. The calculator accepts decimal values for precise conversions.
Q1: Why is the conversion factor 18?
A: The conversion factor 18 comes from the molecular weight of glucose (180 g/mol) divided by 10 (to convert between deciliters and liters).
Q2: What are normal glucose levels?
A: Normal fasting glucose is typically 4.0-5.4 mmol/L (72-99 mg/dL). Levels between 5.5-6.9 mmol/L (100-125 mg/dL) may indicate prediabetes, and levels ≥7.0 mmol/L (126 mg/dL) may indicate diabetes.
Q3: Which countries use which units?
A: Most countries use mmol/L, while the United States, Japan, and a few other countries use mg/dL. Always check which unit your glucose meter displays.
Q4: Can I convert mg/dL to mmol/L?
A: Yes, to convert mg/dL to mmol/L, divide by 18. The formula is: mmol/L = mg/dL ÷ 18
Q5: Is the conversion the same for all substances?
A: No, different substances have different conversion factors based on their molecular weights. This conversion factor is specific to glucose.