HbA1c to eAG Converter
Convert your 3-month HbA1c blood test percentage into an estimated average daily glucose reading (eAG).
%
mg/dL (US/LK Standard)
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mmol/L (Int'l)
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Enter a value above.
About this calculator
HbA1c reflects average blood sugar over about 3 months. This converter uses the formula eAG (mg/dL) = 28.7 × HbA1c − 46.7.
Results are for information only and are not a diagnosis. Consult a doctor for medical advice.
Frequently asked questions
What HbA1c is normal?
Below 5.7%. 5.7-6.4% is prediabetes and 6.5% or above suggests diabetes.
How often should HbA1c be tested?
Every 3-6 months if you have diabetes, or as your doctor advises.
Related reading
Normal Blood Sugar Levels: Fasting, After Meals, HbA1c and Targets for Diabetes
Normal, prediabetes and diabetes blood sugar ranges in mg/dL and mmol/L for fasting, post-meal and HbA1c, plus targets for people with diabetes, pregnancy and children.