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Estimated Average Glucose (eAG) Calculator

Result

Calculated result 125.5 Based on the values entered.
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Estimated Average Glucose (eAG) Calculator The Estimated Average Glucose Calculator converts an HbA1c percentage into an estimated average blood glucose level, in both mg/dL and mmol/L, using the ADAG study formula. — free online calculator.

Formula

eAG (mg/dL) = 28.7 × HbA1c − 46.7
  • Estimated Average Glucose (eAG) Calculator calculates its result from C, Hba1. It uses the formula eAG (mg/dL) = 28.7 × HbA1c − 46.7. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
  • The main inputs are C, Hba1. Enter them in the units and format shown in the calculator.
  • Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Estimated Average Glucose (eAG)

Inputs
  • C: 2
  • Hba1: 3

Using C = 2, Hba1 = 3, the calculated result is 125.5.

Sample result: Calculating…

Frequently asked questions

What does the Estimated Average Glucose (eAG) calculate?

Estimated Average Glucose (eAG) Calculator The Estimated Average Glucose Calculator converts an HbA1c percentage into an estimated average blood glucose level, in both mg/dL and mmol/L, using the ADAG study formula. — free online calculator.

Which values should I enter?

Enter C, Hba1 using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: eAG (mg/dL) = 28.7 × HbA1c − 46.7.

Why might my result differ from another source?

Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026