Convert blood sugar/glucose from mmol/L (UK standard) to mg/dL (US standard) and vice versa using our blood sugar converter.

1 mmol/L equals approximately 18 mg/dL. Therefore, in order to convert from mmol/L to mg/dL, the blood glucose value needs to be multiplied by 18.0182.
Blood Sugar: (Enter mg/dL or mmol/L value for conversion)


Whats the difference between mmol/L and mg/dL?

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

  • mmol/L or Millimoles Per Litre: – International standard unit for measuring the concentration of glucose in the blood – also known as millimolar (mM). This unit is used in the UK.
  • mg/dL: Milligrams per 100 millilitres: Unit for measuring concentration of glucose in the blood in the USA – milligrams per decilitre.

Blood glucose typically varies from 4 mmol/L to 6 mmol/L for people without diabetes.

Blood sugar (also called blood glucose) needs to be tightly controlled in the human body to minimise the risk of complications developing.

Glycemic Assessment: HbA1C to Average Glucose Conversions

Input Any One of the Following:
HbA1c - commonly used unit - (DCCT)    percent
HbA1c (IFCC, SI units)    mmol/mol
Estimated average glucose    mg/dL
Estimated average glucose (SI units)    mmol/L

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