how to calculate a1c
Asked by: GlucoseTracker101
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Community Answer
Answered by Dr. Emily Carter, MD
The A1C test measures your average blood sugar levels over the past 2-3 months. It is reported as a percentage, and the formula to estimate A1C from average blood glucose levels is as follows:
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Formula:
A1C (%) = (Average Blood Glucose (mg/dL) + 46.7) / 28.7
For example, if your average blood glucose is 154 mg/dL:
A1C = (154 + 46.7) / 28.7 = 7.0%
You can also use the following table for quick reference:
A1C (%) Estimated Average Glucose (mg/dL)
6 126
7 154
8 183
9 212
10 240
For accurate results, consult your healthcare provider and get an A1C test done in a lab.