Endocrinology

HbA1c to Average Glucose

Estimated average glucose from HbA1c.

Education and reference only. Not a substitute for clinical judgement, local policy or product labelling. Always verify before clinical use. Values are calculated in your browser and never stored.

When to use

Use to translate an HbA1c (%) into an estimated average glucose for patient discussions.

Why use

It makes HbA1c more intuitive by expressing it as an average glucose.

Critical actions

eAG (mmol/L) ≈ 1.59 × HbA1c(%) − 2.59. This is an estimate of average glucose, not a target. Enter HbA1c as a percentage (DCCT/NGSP).

Evidence & references

  1. Nathan DM et al. Translating the A1C assay into estimated average glucose values. Diabetes Care. 2008.

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