Blood sugar measurement units: mg/dL and mmol/L

Both sets of units are used to measure blood sugar levels and both give a measurement of the concentration of glucose in the blood, although in slightly different ways.

Unit mg/dL mmol/L
Description Milligrams per 100 millilitres (1 Deciliter) Millimoles per litre
Measurement way Gives the concentration by the ratio of weight to volume, in this case milligrams per deciliter. Gives the molarity, which is the number of molecules of a substance within a specified volume, in this case within 1 litre.
Countries(full list below) Mainly USA and continental Europe Mainly UK
Conversion mg/dL = 18 × mmol/l mmol/l = mg/dl / 18
Conversion example 90 mg/dL 5 mmol/L

Full list of countries:

mgdl_mmoll_countries

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