Blood Glucose Converter

Convert blood sugar between mg/dL and mmol/L instantly, with reference ranges.

Value in mg/dL

Value in mmol/L

Enter a value in either unit.

Informational only, not medical advice.

How to use

Enter a value in either unit to convert it and see reference ranges.

How do I convert mg/dL to mmol/L?

Divide mg/dL by 18. To go the other way, multiply mmol/L by 18.

What are normal ranges?

Fasting: roughly 70-100 mg/dL (3.9-5.6 mmol/L). These are general references — your doctor sets your personal targets. Not medical advice.

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