how to calculate a1c from blood glucose
Asked by: GlucoseTracker
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Community Answer
Answered by Dr. SugarSense 🩺
The A1C test measures your average blood glucose levels over the past 2-3 months. While you cannot directly calculate A1C from a single blood glucose reading, you can estimate it using the following formula:
Estimated A1C (%) = (Average Blood Glucose + 46.7) / 28.7
For example, if your average blood glucose is 154 mg/dL:
- A1C = (154 + 46.7) / 28.7 = 7%
Here’s a quick reference table:
Average Blood Glucose (mg/dL) Estimated A1C (%)
126 6
154 7
183 8
212 9
240 10
Note: This is an estimation and may not be as accurate as a lab-performed A1C test. Always consult your healthcare provider for precise measurements and interpretation.