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A1C to Average Glucose (eAG) Converter

Convert HbA1c (%) to estimated average glucose in mg/dL and mmol/L. Educational only — no data stored.
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HbA1c is often reported as a percentage, which can be difficult to interpret on its own.

While the value reflects average blood glucose over several months, it does not directly resemble the numbers people usually see in daily glucose readings. This gap is a common source of confusion, especially when comparing lab results with home measurements.

This converter expresses HbA1c (%) as an estimated average glucose value (eAG). The result is intended to provide context and improve understanding of laboratory data. It does not establish a diagnosis and should be interpreted alongside clinical guidance.

percent (%)
Typical reference points: 5.7–6.4% often falls into “prediabetes range” in many guidelines.

This tool does not diagnose disease or replace medical advice. Always discuss lab interpretation and next steps with a qualified healthcare professional.

Estimated average glucose (eAG) is a standardized way of expressing HbA1c results using the same units as daily glucose measurements.

The value is derived from a linear relationship between HbA1c and mean blood glucose observed across large populations. It represents an estimate of average glucose exposure over the previous two to three months rather than a precise daily value.

Because individual glucose patterns vary, eAG should be viewed as a contextual reference rather than an exact reflection of meter or sensor readings.

Conversion results Ready
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mg/dL
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mmol/L
Enter HbA1c (%) and press Convert.

Estimated average glucose (eAG) expresses HbA1c using the same units as daily glucose readings.

The value is derived from a population-based relationship between HbA1c and mean glucose over the previous two to three months.

It represents an estimate intended for context rather than a precise reflection of individual daily measurements.

Notes
  • This conversion uses a commonly cited relationship between HbA1c and estimated average glucose.
  • Individual glucose patterns may vary.
  • Use this information as a reference, not as a diagnosis.