HbA1c to average glucose calculator
Convert HbA1c to estimated average glucose (eAG), and back.
Quick answerEstimated average glucose (mg/dL) = 28.7 × HbA1c − 46.7. So an HbA1c of 6.0% is about 126 mg/dL, 7.0% is about 154 mg/dL and 8.0% is about 183 mg/dL.
HbA1c reflects about three months of average blood sugar. Read the HbA1c guide for ranges and what can make it inaccurate.
Information only. This page is general education, not medical advice. Reference ranges differ between labs, ages and sexes, and only a clinician who knows your history can interpret your results. Read the full disclaimer.
Frequently asked questions
What is estimated average glucose (eAG)?
eAG translates an HbA1c percentage into the same units as a glucose meter. The formula is eAG (mg/dL) = 28.7 × HbA1c − 46.7.
What HbA1c equals an average glucose of 154 mg/dL?
An HbA1c of 7.0% corresponds to an estimated average glucose of about 154 mg/dL (8.6 mmol/L).
Why does my meter average differ from my eAG?
eAG is an estimate from a research formula. Meter averages depend on when you test, and HbA1c can be affected by anemia, kidney disease and hemoglobin variants.