Fasting plasma glucose
After at least 8 hours without food or drink other than water.
NormalBelow 100 mg/dLBelow 5.6 mmol/L
Prediabetes range100–125 mg/dL5.6–6.9 mmol/L
Diabetes threshold126 mg/dL or higher7.0 mmol/L or higher
ULTIVERO HEALTH CALCULATOR
Blood Sugar Converter
Convert glucose readings between mg/dL and mmol/L instantly.
GLUCOSE CONVERSION
Enter either value
Conversion factor: mmol/L × 18.02 = mg/dL
Converted resultEnter a glucose value
The converted value will appear automatically.
QUICK REFERENCE
Understanding laboratory glucose ranges
These thresholds are for screening and diagnosis by healthcare professionals—not for self-diagnosis.
2-hour glucose tolerance test
Two hours after drinking a standard glucose solution.
NormalBelow 140 mg/dLBelow 7.8 mmol/L
Prediabetes range140–199 mg/dL7.8–11.0 mmol/L
Diabetes threshold200 mg/dL or higher11.1 mmol/L or higher
How the conversion works
To convert mmol/L to mg/dL, multiply by 18.02. To convert mg/dL to mmol/L, divide by 18.02. Results are rounded for convenient reading.
Important medical notice
This calculator provides unit conversion and general educational information only. Home meter readings and laboratory plasma glucose results are not always interchangeable. Do not change medication or treatment based on this page. Discuss unexpected results with a qualified healthcare professional.
Blood Sugar Unit Converter Guide
Blood glucose is commonly reported in milligrams per decilitre (mg/dL) or millimoles per litre (mmol/L). This converter helps readers compare results written in either convention. For glucose, mmol/L is calculated from mg/dL by dividing by 18; mg/dL is calculated from mmol/L by multiplying by 18.
How to use this tool
Enter the number exactly as it appears on the meter or laboratory report, select the original unit and review the converted value. Keep the original report because laboratories may use their own rounding. The converter changes units only—it does not classify a reading, diagnose diabetes or recommend treatment.
Important limitations
Food, medication, illness, timing and the type of test can affect a glucose reading. Discuss unexpected or concerning results with a qualified clinician and follow local emergency advice when symptoms are severe.
Frequently asked questions
Is this tool free to use?
Yes. The tool is available without account registration.
Should I verify the output?
Yes. Review important results against an authoritative source or qualified professional when a decision has financial, medical, legal, academic or safety consequences.
Does it work on mobile?
The interface is designed for current desktop and mobile browsers. Available features can vary with the browser and file or input type.