Diabetes Eyecare > Blood Sugar Calculator

Blood Sugar Calculator

Enter Glycosylated Hemoglobin (HbA1c) =   %  

Average plasma blood glucose =  mg/dl       mmol/L

Average whole blood glucose =  mg/dl       mmol/L

References: Rohlfing CL 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 25:275-278, 2002.PUBMED

A1c and Average Blood Sugar

Know the relationship between your HbA1c as it relates to your average blood sugars

Assay values based upon the DCCT study, 1984-1993.
A1c color pyramid from: Americian Diabetes Association Clinical Practice Recommendations 2009.

The Diabetes Control and Complications Trial (DCCT) revealed a linear relationship
between the HbA1c (glycosylated hemoglobin) values between 8% and 5% to the
risk of eye disease. The study proved that for every 10% decrease in the A1c
the risk of developing diabetic retinopathy decreases by 43%.

Lowering A1c 10%

    Decreased Risk of
Developing Retinopathy

From 8.0% to 7.2%                    43%
From 7.2% to 6.5%                  43%
From 6.5% to 5.8%                  43%
From 5.8% to 5.2%                  43%

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