Estimated Average Glucose (eAG) Calculator

Convert HbA1c into estimated average glucose (eAG).

Aug 31, 2026 Metabolic Endocrinology #diabetes #eag #hba1c #average-glucose

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Formula & Clinical Notes

Formula

eAG (mg/dL) = 28.7 × HbA1c − 46.7

Clinical Notes

eAG = 28.7 × HbA1c − 46.7 (mg/dL), derived from the ADAG study, and allows the HbA1c to be expressed as average blood glucose. For example, an HbA1c of 7% corresponds to an eAG of about 154 mg/dL (8.6 mmol/L).

Sources

Nathan et al. (2008) — Translating the A1C assay into estimated average glucose