A1C ↔ Average Glucose Calculator

Convert HbA1c to estimated average glucose, both ways

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A1C ↔ Average Glucose Calculator

HbA1c reflects your average blood glucose over the past 2–3 months. This converter uses the ADAG study formula (eAG mg/dL = 28.7 × A1C − 46.7) to translate an A1C percentage into estimated average glucose in mg/dL and mmol/L, and back again. It also flags the normal, prediabetes and diabetes ranges. Results are an estimate for education only and do not replace a clinical test.

Estimate only (ADAG formula). Not a diagnosis — consult a healthcare professional.

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