A1C Calculator

Health & Fitness

Convert HbA1c percent to estimated average glucose, or the reverse.

%
Calculated Result
140 mg/dL

7.8 mmol/L

Formula: eAG mg/dL = 28.7 Γ— A1C βˆ’ 46.7 (ADAG). Not a diagnosis.

About this calculator

Lab methods differ. Use the same lab method when you compare readings over time.

How It Works & Formula

FormulaeAG = 28.7 Γ— A1C βˆ’ 46.7 (ADAG)

eAG mg/dL = 28.7 Γ— A1C βˆ’ 46.7; mmol/L = eAG / 18.018.