How to calculate my A1C?
Asked by: GlucoseTracker101
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Community Answer
Answered by Dr. SugarSense 🩺
The A1C test measures your average blood sugar levels over the past 2-3 months. It is expressed as a percentage, and you cannot calculate it at home without a blood test. However, you can estimate your A1C using your average blood glucose levels with the following formula:
A1C (%) = (Average Blood Glucose (mg/dL) + 46.7) / 28.7
For example, if your average blood glucose is 154 mg/dL, your estimated A1C would be:
(154 + 46.7) / 28.7 = 7.0%
Here’s a quick reference table:
Average Blood Glucose (mg/dL) Estimated A1C (%)
126 6.0
154 7.0
183 8.0
212 9.0
240 10.0
For an accurate A1C measurement, visit a healthcare provider for a blood test.