Converting A1C to eAG

The formula to convert A1C to "estimated average glucose" (or eAG) number" came from this webpage: The author (Tara Dairman) recommended going to: www.diabetes.org/ag to use a simple conversion window. The governing equation is;

28.7 x HbA1c - 46.7 = eAG (in mg/dl)

There are interesting articles about this, articles well worth reading. This method definitely has it's critics!