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A1C / eAG Converter

Convert A1C to estimated average glucose, both directions.

A1C
6.0%
Prediabetes

Estimated average glucose (eAG): 125 mg/dL

eAG = 28.7 × A1C - 46.7 (Nathan et al, 2008)

Reference ranges

  • Normal: A1C below 5.7%
  • Prediabetes: 5.7 to 6.4%
  • Diabetes: 6.5% or higher

A1C reflects average blood glucose over the prior 2 to 3 months. eAG translates A1C into the same units as a finger-stick reading. This is informational, not a diagnosis.

About

A1C reflects average blood glucose over 2 to 3 months. eAG translates it into the same units as a finger-stick reading. Uses Nathan et al. 2008 (eAG = 28.7 × A1C − 46.7). Switch units between mg/dL and mmol/L.

How to use

  1. Pick the direction.
  2. Type the value.
  3. Read the result and category.

FAQ

What's a healthy A1C?+

Below 5.7 percent is normal, 5.7 to 6.4 is prediabetes, 6.5 or higher is in the diabetes range. Targets for someone managing diabetes vary - many providers aim for below 7 percent.