Blood Sugar (Glucose) Converter — 3 Units, Free & Instant

Convert between Blood Sugar (Glucose) units. Choose from 3 different units including Milligrams per Deciliter, Millimoles per Liter, Grams per Liter.

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mg/dL to mmol/L mmol/L to mg/dL g/L to mmol/L mg/dL to g/L

All Units

From	Milligrams per Deciliter (mg/dL)
Milligrams per Deciliter (mg/dL)	1
Millimoles per Liter (mmol/L)	18.0156
Grams per Liter (g/L)	100

Two units, one measurement

Blood glucose is reported in mg/dL in the US, Japan, India and parts of Europe, and in mmol/L in the UK, Canada, Australia and most of the world; France traditionally uses g/L. The conversion factor comes from the molar mass of glucose (180.16 g/mol): divide mg/dL by 18.02 to get mmol/L — 126 mg/dL equals 7.0 mmol/L.

Common reference points

ADA fasting guidance translates like this: normal 70–99 mg/dL = 3.9–5.5 mmol/L, prediabetes 100–125 mg/dL = 5.6–6.9 mmol/L, the diabetes threshold 126 mg/dL = 7.0 mmol/L, and the 2-hour post-meal diagnostic cut-off 200 mg/dL = 11.1 mmol/L. These pages convert units only — they are not medical advice, and target ranges should always come from your clinician.