Blood sugar converter: mg/dL to mmol/L and back

For doctors and health professionals

A tool to support the clinical decisions of doctors and health professionals, not for self-diagnosis or self-treatment.

This calculator is inside the patient's file in Clinicato: open it from "Medical tools" while you chart the visit, it fills in from the patient's details and vital signs where they are recorded, and adds its result to the visit's plan in one tap, with the "Medical tools" add-on. Try it in your clinic

Calculator

Medical note: The result supports a clinical decision, it does not replace the doctor's judgement or examining the patient, and is to be checked against your reference before any treatment decision.

How it works and when to use it

mmol/L = mg/dL ÷ 18.016, from the molecular weight of glucose, and the other way round by multiplying by the same number.

ADA classes: fasting under 100 normal, 100 to 125 impaired fasting glucose, 126 or more diabetes range, and 2 hours after 75 g glucose: under 140 normal, 140 to 199 impaired tolerance, 200 or more diabetes range.

Reference: mmol/L = mg/dL ÷ 18.016 (glucose 180.16 g/mol); diagnostic thresholds: ADA Standards of Care in Diabetes

Frequently asked questions

Why do countries and labs use different units?

Some use mg/dL and others mmol/L, and the value is the same once converted.

Is a home glucose meter enough for a diagnosis?

No, diagnosis needs a laboratory test, the home meter is for daily follow-up.

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Clinic software for this specialty

Try Clinicato for your clinic

These calculators are free here for everyone, and in Clinicato 49 medical tools work inside the patient's file with the "Medical tools" add-on: filled from the visit and the vital signs, with the result added to the visit's plan, next to appointments, prescriptions and invoices.

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