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A1C to eAG Calculator
Convert HbA1c (A1C) to estimated average glucose (eAG) in mg/dL and mmol/L, convert back from eAG to A1C, switch between NGSP % and IFCC mmol/mol, and generate a conversion table and goal targets.
HbA1c (A1C) and eAG Conversion + IFCC/NGSP Unit Support
Use the ADAG relationship to translate A1C into an eAG number you can compare with common glucose readings, then generate tables and targets for planning and discussions with your care team.
eAG is an estimate derived from A1C. Your meter or CGM averages can differ due to variability, missing data, and different time windows.
Converting eAG back to A1C is a mathematical reverse of the ADAG relationship. It is helpful for planning and communication, but not a substitute for lab testing.
Use a conversion table when you want a quick reference for targets, trends, or explaining results across different units and reports.
Categories and goals are general references. Targets should be individualized with a clinician, especially if hypoglycemia risk, comorbidities, pregnancy, or anemia/hemoglobin variants are factors.