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HbA1c to Estimated Average Glucose (eAG) Calculator

eAG = 28.7 · A1c − 46.7 (mg/dL).

Convert an HbA1c percentage to the estimated average plasma glucose (eAG) using the ADAG study regression eAG (mg/dL) = 28.7 · A1c − 46.7. Reports the result in both mg/dL and mmol/L.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

eAG (mg/dL) = 28.7 · A1c − 46.7; mmol/L = mg/dL / 18.

In depth

Convert an HbA1c percentage to the estimated average plasma glucose (eAG) using the ADAG study regression eAG (mg/dL) = 28.7 · A1c − 46.7. Reports the result in both mg/dL and mmol/L.