Blood sugar converter
Convert blood glucose between mg/dL (used in the US) and mmol/L (used almost everywhere else), with the common thresholds marked.
That's 1.11× as high as a normal fasting level, while the fasting prediabetes threshold is 1.01× higher. For information only: thresholds differ between guidelines, so discuss your own readings with a doctor.
What it means
Where does that sit?
Information only, not medical advice. Thresholds vary by country, guideline and person: ask your doctor about your own numbers.
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Your reading in every unit
Learn
Three things worth knowing
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Divide by 18
mg/dL ÷ 18 gives mmol/L: 100 mg/dL is 5.6 mmol/L. To go back, multiply by 18.
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Weight against molecules
Counting molecules (mmol/L) lets chemists compare different substances directly. Counting weight (mg/dL) was simpler for older lab equipment, and the US kept it.
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Check which unit the meter uses
A reading of 7 is normal in mmol/L and impossibly low in mg/dL. Meters bought abroad often use the other scale, and the same number means very different things.
Shortcuts
Popular blood sugar level conversions
Background
About blood sugar units
The US measures glucose by weight, in mg/dL. Most other countries measure by molecules, in mmol/L. The bridge is the molar mass of glucose, 180.156 g/mol, which gives the familiar factor of 18.0182.