Convert blood glucose between mg/dL (US) and mmol/L (most other countries) instantly.
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Blood Sugar Converter
Health • mg/dL ↔ mmol/L
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Enter a value to convert
Result
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Conversion Factor
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In mmol/L
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Visual Comparison
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How to Use the Blood Sugar Converter
Enter a value — type any number. Invalid text and symbols are blocked automatically.
Select From and To units — choose the units to convert between.
Read the animated result — the converted value, factor, and full reference table update instantly.
Use Swap (⇄) — reverse the conversion in one click.
Why Use This Blood Sugar Converter
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Accurate Standards
Built on internationally recognised SI and standards-body conversion factors for dependable results.
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Instant & Animated
Results update live as you type, with a clear visual breakdown across every unit at once.
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100% Private
Everything runs in your browser — no account, no uploads, nothing leaves your device.
Understanding the Blood Sugar Converter
The US, Germany and a few others report blood glucose in milligrams per deciliter (mg/dL); most of the world uses millimoles per litre (mmol/L). The exact relationship is mmol/L = mg/dL ÷ 18.0182 (the molar mass of glucose). For example 100 mg/dL ≈ 5.6 mmol/L, and a fasting level of 126 mg/dL (7.0 mmol/L) is the diabetes threshold.
This is a unit conversion for convenience and education — it is not a diagnosis. Always interpret readings with your clinician and meter's guidance.
Common Blood Sugar Converter Values
Quick reference — 1 Milligram/deciliter (mg/dL) is equal to:
Millimole/liter
mmol/L
0.0555075
Blood Sugar Converter FAQ
Divide by 18.0182. So 90 mg/dL ÷ 18 ≈ 5.0 mmol/L. To go back, multiply mmol/L by 18.
Generally 70–99 mg/dL (3.9–5.5 mmol/L) fasting is considered normal; 100–125 mg/dL (5.6–6.9 mmol/L) is prediabetes. Confirm with your doctor.