Glucose Unit Converter
Convert blood glucose measurements between mg/dL (milligrams per deciliter) and mmol/L (millimoles per liter).
Quick Reference Values
| mg/dL | mmol/L | Description |
|---|---|---|
| 70 | 3.9 | Low range threshold |
| 100 | 5.6 | Normal fasting |
| 140 | 7.8 | Target upper limit |
| 180 | 10.0 | High range threshold |
| 250 | 13.9 | Significantly elevated |
Understanding Glucose Units
mg/dL (milligrams per deciliter) is commonly used in the United States and measures the weight of glucose in a specific volume of blood.
mmol/L (millimoles per liter) is used in most other countries and measures the molar concentration of glucose in blood.
The conversion factor is: 1 mmol/L = 18 mg/dL
Frequently Asked Questions
What is the difference between mg/dL and mmol/L?
mg/dL (milligrams per deciliter) measures the weight of glucose in a volume of blood and is used in the United States. mmol/L (millimoles per liter) measures the molar concentration of glucose and is used in most other countries. The conversion factor is 1 mmol/L = 18 mg/dL.
Which unit should I use for blood glucose monitoring?
Use the unit that your healthcare provider and glucose meter use. In the US, meters typically display mg/dL. In most other countries, meters display mmol/L. This converter helps you understand readings in either unit.
How do I convert mg/dL to mmol/L?
To convert mg/dL to mmol/L, divide the mg/dL value by 18. For example, 180 mg/dL ÷ 18 = 10.0 mmol/L. To convert mmol/L to mg/dL, multiply the mmol/L value by 18.