Blood Glucose Converter

Convert blood sugar levels between mg/dL and mmol/L units. Essential for diabetes management and international health comparisons.

mg/dL
mmol/L

Quick Reference Ranges

Category mg/dL mmol/L
Normal Fasting 70-99 3.9-5.5
Prediabetes Fasting 100-125 5.6-6.9
Diabetes Fasting 126+ 7.0+
Hypoglycemia <70 <3.9

Quick Facts

Conversion Factor
18.0182
Based on glucose molecular weight
mg/dL Countries
US, Japan, France
Also Egypt, Colombia, Israel
mmol/L Countries
UK, Canada, Australia
Most of Europe and Asia
Normal Fasting
70-99 mg/dL
3.9-5.5 mmol/L

Understanding Blood Glucose Units

Blood glucose (blood sugar) levels can be measured in two different units depending on the country or healthcare system. Understanding the conversion between these units is essential for managing diabetes effectively, especially when traveling or using international medical resources.

The Conversion Formula

mg/dL = mmol/L x 18.0182

mmol/L = mg/dL / 18.0182

The factor 18.0182 comes from the molecular weight of glucose (180.182 g/mol) divided by 10.

Which Countries Use Which Units?

mg/dL (milligrams per deciliter)

Used in:

  • United States
  • Japan
  • France
  • Egypt
  • Colombia
  • Israel

mmol/L (millimoles per liter)

Used in:

  • United Kingdom
  • Canada
  • Australia
  • China
  • Most of Europe
  • Most of Asia

Blood Glucose Target Ranges

For Non-Diabetics

  • Fasting: 70-99 mg/dL (3.9-5.5 mmol/L)
  • 2 hours after eating: Less than 140 mg/dL (7.8 mmol/L)

For People with Diabetes (ADA Recommendations)

  • Before meals: 80-130 mg/dL (4.4-7.2 mmol/L)
  • 1-2 hours after meals: Less than 180 mg/dL (10.0 mmol/L)

Common Conversions Quick Reference

mg/dLmmol/L
703.9
804.4
1005.6
1206.7
1407.8
18010.0
20011.1
25013.9
30016.7

Medical Disclaimer

This converter is provided for informational purposes only. Blood glucose reference ranges may vary based on individual health conditions, age, and other factors. Always follow your healthcare provider's specific recommendations for blood glucose targets. If you experience symptoms of high or low blood sugar, seek medical attention immediately.