About A1C Calc
A1C Calc is an educational tool for converting between HbA1c and estimated average glucose (eAG).
What this site does
The calculator converts A1C percentages into estimated average glucose in mg/dL and mmol/L, and also converts average glucose back into an estimated A1C.
The articles explain common A1C ranges, conversion charts, the ADAG formula, and reasons A1C may not match meter or CGM averages.
How calculations work
The main conversion uses the ADAG relationship: eAG (mg/dL) = 28.7 x A1C - 46.7. Results are estimates, not diagnoses.
What this site does not do
A1C Calc does not provide medical advice, diagnosis, treatment plans, or emergency guidance. Discuss lab results and treatment decisions with a qualified healthcare professional.