HbA1c to Glucose Converter

Convert HbA1c percentage to estimated average glucose (eAG) in mg/dL and mmol/L using the ADAG study formula.

Convert

HbA1c

%

Results

Estimated Avg Glucose

125.5 mg/dL

Estimated Avg Glucose

7 mmol/L

Classification

2 (1=Normal, 2=Prediabetes, 3=Diabetes)

How to Use This Calculator

Enter the HbA1c percentage value from the lab report.
Review the estimated average glucose (eAG) in mg/dL using the ADA formula.
Compare the eAG to the patient's self-monitored glucose log for concordance.
Use the 3-month average glucose to assess glycemic control relative to the <7% target.
Repeat HbA1c every 3 months for patients not at goal, or every 6 months when stable.

How the result changes with HbA1c

HbA1c	Estimated Avg Glucose	Classification
4.7	88.2 mg/dL	1 (1=Normal, 2=Prediabetes, 3=Diabetes)
8.95	210.2 mg/dL	3 (1=Normal, 2=Prediabetes, 3=Diabetes)
14	355.1 mg/dL	3 (1=Normal, 2=Prediabetes, 3=Diabetes)
18	469.9 mg/dL	3 (1=Normal, 2=Prediabetes, 3=Diabetes)

What each input means

HbA1c: Hemoglobin A1c percentage from blood test results (typically 4-14%).

How this is calculated

Worked example, using the default values

Identify Input Parameters
HbA1c = 6 = 1 input(s) provided
Calculate Estimated Avg Glucose
Estimated Avg Glucose
125.5 = 125.5
Calculate Classification
Classification
2 = 2
Calculate Estimated Avg Glucose
Estimated Avg Glucose
7 = 7

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