Blood Sugar Unit Converter
Convert blood sugar between mg/dL and mmol/L in seconds, with a two-column reference table for common readings.
Result
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Converted value
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| mg/dL | mmol/L |
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This factor is specific to glucose. Do not use it for cholesterol or another analyte. For interpretation, see the blood sugar level chart.
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How to convert mg/dL to mmol/L
The mg/dL to mmol/L query exists because blood glucose is reported in different units around the world. mg/dL is used in the United States, Germany, France, Japan and several other countries, while mmol/L is used in the UK, Canada, Australia and much of Europe.
This converter uses the glucose-specific factor supplied for blood sugar. It is a pure unit conversion; the sibling blood sugar level chart interprets ranges separately.
The divisor comes from glucose's molar mass, 180.156 g/mol, divided by 10. Do not apply it to cholesterol or any other analyte.
mmol/L = mg/dL ÷ 18.0182 · mg/dL = mmol/L × 18.0182 For diagnosis or treatment decisions, use the guidance of your healthcare professional.
Blood sugar unit converter FAQ
How do I convert mg/dL to mmol/L?
Divide the mg/dL value by 18.0182, then display the result to one decimal place.
How do I convert mmol/L to mg/dL?
Multiply the mmol/L value by 18.0182, then display the result to the nearest whole number.
Why are blood sugar units different by country?
mg/dL is common in the United States, Germany, France and Japan. mmol/L is common in the UK, Canada, Australia and much of Europe.
Can I use this factor for cholesterol?
No. The 18.0182 factor is specific to glucose and should not be applied to cholesterol or another analyte.
Does this tool interpret blood sugar ranges?
No. It only converts units. Use the blood sugar level chart for range interpretation.