A1C to eAG Calculator
Convert an A1C lab result to estimated average glucose or translate eAG back to A1C.
Examples
- A1C 7.0% with mode 1 ⇒ 154 mg/dL (8.6 mmol/L)
- eAG 160 mg/dL with mode 2 ⇒ 7.21 % A1C
FAQ
Which value should I enter?
Enter your most recent lab A1C for mode 1 or an estimated average glucose reading in mg/dL for mode 2.
Can I use mmol/L directly?
Convert your mmol/L value to mg/dL first by multiplying by 18.0182, then run the calculation.
Is this the same as my glucometer average?
It approximates the long-term average tied to A1C, which can differ from shorter-term meter averages.
Additional Information
- The ADA formula links A1C and eAG: eAG (mg/dL) = 28.7 × A1C − 46.7.
- Divide mg/dL by 18.0182 to express glucose in mmol/L for international units.