TooldenTOOLDENCALCULATORSON-DEVICE
Blood Sugar Converter: Glucose Level mg/dL to mmol/L
Convert blood glucose levels between mg/dL and mmol/L and see where they fall on the fasting reference range, all computed in your browser.
HOW TO USE
- 1Enter your blood sugar reading in the value field.
- 2Choose the unit your reading is in, either mg/dL or mmol/L.
- 3Read the converted value and the fasting category (Low, Normal, Elevated, or High) in the results.
EXAMPLE
INPUT
Value: 100 · Unit: mg/dL
OUTPUT
5.5 mmol/L · Elevated (100 to 125 mg/dL fasting)
FAQ
How does blood glucose conversion between mg/dL and mmol/L work?
To convert mg/dL to mmol/L, divide by 18.0182. To convert mmol/L to mg/dL, multiply by 18.0182. Many glucose meters report in one unit or the other depending on the country.
What is a normal blood sugar level?
For fasting glucose, the normal range is 70 to 99 mg/dL (3.9 to 5.5 mmol/L). 100 to 125 mg/dL (5.6 to 6.9 mmol/L) indicates prediabetes, and 126 mg/dL (7.0 mmol/L) or higher suggests diabetes.
Why is my glucose meter in a different unit than my doctor's lab?
In the US, readings are usually in mg/dL; in most other countries, labs and meters use mmol/L. This converter lets you compare readings across both systems.
Is this a medical diagnostic tool?
No. This is a unit conversion tool with reference ranges for general information. Diagnose and treat blood sugar conditions only with guidance from a healthcare professional.