Blood Sugar Converter (mg/dL ↔ mmol/L)

Instantly convert blood glucose readings between US (mg/dL) and International (mmol/L) units with instant clinical status evaluation.

How Blood Sugar Converter Works & Scientific Formula

Our online Blood Sugar Converter uses clinically validated physiological formulas for high accuracy. Formula: mmol/L = mg/dL / 18.0182 | mg/dL = mmol/L × 18.0182

Scientific Formula & Calculation Logic

This calculator executes clinical formulas recognized in medical and physiological literature:


                        mmol/L = mg/dL / 18.0182  |  mg/dL = mmol/L × 18.0182

Reference Ranges & Health Categories

Category / Classification	Reference Value / Range	Health Interpretation
• Normal Fasting	70 – 99 mg/dL (3.9 – 5.5 mmol/L)	Healthy glycemic control
• Prediabetes (Fasting)	100 – 125 mg/dL (5.6 – 6.9 mmol/L)	Impaired fasting glucose
• Diabetes (Fasting)	≥ 126 mg/dL (≥ 7.0 mmol/L)	Clinical diagnostic threshold
• Normal 2h Post-Meal	< 140 mg/dL (< 7.8 mmol/L)	Normal postprandial

Frequently Asked Questions (FAQs)

What is the conversion factor between mg/dL and mmol/L? ▾

Divide mg/dL by 18 to get mmol/L. Multiply mmol/L by 18 to get mg/dL.

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