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Converts blood glucose between mmol/L (used in most of the world) and mg/dL (used in the US and a few other countries), using the standard published molar-mass-based conversion factor for glucose: mg/dL = mmol/L x 18.0182. This conversion factor is specific to glucose — other analytes (e.g. cholesterol) have different molar masses and therefore different conversion factors (see the separate Cholesterol Units Converter on this site). For general reference and educational purposes only — not a medical diagnosis. Consult a doctor for actual interpretation of a blood glucose result.
How it works
Select a conversion direction and enter your blood glucose value. The tool applies the glucose-specific factor (18.0182) to convert between mmol/L and mg/dL.
- Enter conversion direction.
- Enter blood glucose value.
- Click Calculate to see your results.
Examples
5.5 mmol/L
5.5 x 18.0182 = 99.1 mg/dL.
126 mg/dL
126 / 18.0182 = 6.99 mmol/L.
Who should use it
- Comparing blood glucose readings between countries using different units.
- Understanding home glucose meter readings against lab reports.
Industry applications
- Diabetes education and self-monitoring reference
- International health literacy
Advantages
- Simple, standard glucose-specific conversion.
- Works in both directions.
Limitations
- Scoped to glucose only — not valid for other analytes.
Common mistakes to avoid
- Using a generic or rounded conversion factor (e.g. 18) instead of the more precise 18.0182, which can introduce small errors at higher values.
- Applying this glucose-specific factor to a different analyte.
Best practices
- Always confirm which unit your lab report uses before converting, and double-check with your doctor for clinical decisions.
Tips
- If you travel between countries with different glucose meter unit conventions, keep this conversion handy to compare readings consistently.