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How to use Blood Sugar Converter

Enter a value and pick mg/dL, mmol/L, g/L, or µmol/L, and the tool converts it to the other blood glucose units instantly.

Frequently asked questions

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

Divide mg/dL by 18.0182. For example, 100 mg/dL ≈ 5.55 mmol/L.

What is a normal fasting blood sugar?

Roughly 70–100 mg/dL (3.9–5.5 mmol/L); this tool is for unit conversion only, not medical advice.

Why two different glucose units?

The US uses mg/dL while most other countries use mmol/L; the conversion factor for glucose is 18.0182.

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