Blood Sugar A1C Calculator Formulas:
Estimated Average Plasma Blood Glucose (mg/dl) = (HbA1c * 35.6) - 77.3
Estimated Average Plasma Blood Glucose (mmol/L) = (HbA1c * 1.98) - 4.29
Estimated Average whole blood glucose (eAG) = Plasma Blood Glucose / 1.12
C. Rohlfing et al. Defining the Relationship Between Plasma Glucose and HbA1c, Analysis of glucose profiles and HbA1c in the Diabetes Control and Complications Trial," Diabetes Care. 2002. 25:275-278.
Blood sugar level ranges from ~70 mg/dL to ~120 mg/dL in normal people, and ~70 mg/dL to ~150 mg/dL in people with diabetes. Blood sugar goes up right after eating, and will return to the normal range in 1~2 hours.