HbA1c to eAG Converter

%
Health

Convert HbA1c (%) to estimated average glucose (eAG) in mg/dL and mmol/L.

Formula

eAG (mg/dL) = 28.7 × A1c (%) − 46.7; eAG (mmol/L) = eAG (mg/dL) / 18.018
  • Nathan DM et al. Diabetes Care 2008;31:1473–1478.
  • ADA target for most adults: HbA1c <7.0% (eAG <154 mg/dL).
  • 1% change in HbA1c ≈ 28.7 mg/dL change in eAG.

HbA1c 7.0% (well-controlled diabetes)

Inputs
  • HbA1c: 7 %

eAG = 28.7×7.0 − 46.7 = 200.9 − 46.7 = 154 mg/dL = 8.6 mmol/L.

Frequently asked questions

What is eAG?
Estimated Average Glucose (eAG) expresses HbA1c in glucose units (mg/dL or mmol/L) to make the value more intuitive for patients who self-monitor blood glucose.