Convert between an A1C percentage and estimated average glucose (eAG), the two ways diabetes control is commonly expressed.
How it works
- Select whether to convert from A1C to glucose or vice versa.
- Enter the clinical value.
- The calculator runs the ADA formula to translate the number.
Frequently asked questions
What A1C is considered normal?
Below 5.7 percent is typically normal, 5.7 to 6.4 prediabetes, and 6.5 or above diabetes, per common guidelines. Your doctor interprets your numbers.
Why three months?
A1C measures glucose bound to hemoglobin, and red blood cells live about three months, so it captures a long-term average.
Is this a substitute for lab testing?
No. This is an educational conversion; lab A1C and glucose tests are definitive.