Blood Sugar Converter
Convert blood glucose between mg/dL and mmol/L units.
How to Use the Blood Sugar Converter
- Enter the required values into the input fields.
- Click the Calculate button to see the results.
- Review the output values and interpretations below.
Quick Reference
| From | To |
|---|---|
| 70 mg/dL | 3.9 mmol/L |
| 100 mg/dL | 5.6 mmol/L |
| 126 mg/dL | 7.0 mmol/L |
| 180 mg/dL | 10.0 mmol/L |
| 200 mg/dL | 11.1 mmol/L |
Use Cases
- •Monitoring personal health metrics and tracking changes over time.
- •Supporting clinical decision-making with quick formula-based estimates.
- •Educational use for students learning health and fitness calculations.
Formula
Formula: mmol/L = mg/dL ÷ 18.018. mg/dL = mmol/L × 18.018.
Frequently Asked Questions
What is the difference between mg/dL and mmol/L?
Both measure blood glucose concentration. mg/dL (milligrams per deciliter) is used in the US. mmol/L (millimoles per liter) is used in most other countries.
What is a normal fasting blood sugar?
Normal fasting blood sugar is 70-99 mg/dL (3.9-5.5 mmol/L). Prediabetes: 100-125 mg/dL (5.6-6.9 mmol/L). Diabetes: 126+ mg/dL (7.0+ mmol/L).
Why is the conversion factor 18.018?
Glucose has a molecular weight of 180.18 g/mol. Dividing by 100 (to convert dL to L and mg to mmol) gives the 18.018 conversion factor.