A1C to Blood Glucose Calculator
HbA1c (%)
HbA1c measures average blood glucose over 2–3 months. The eAG conversion gives results in everyday mg/dL or mmol/L units for comparison with daily readings.
- 1eAG (mg/dL) = 28.7 × A1c% − 46.7
- 2eAG (mmol/L) = eAG(mg/dL) / 18.018
- 3Normal < 5.7%; Prediabetes 5.7–6.4%; Diabetes ≥ 6.5%
- 4Each 1% A1c ≈ 28.7 mg/dL change in average glucose
A1c = 7.0%=eAG = 154 mg/dL (8.6 mmol/L) — Diabetes
| A1c % | mg/dL | mmol/L | Status |
|---|---|---|---|
| 5.0 | 97 | 5.4 | Normal |
| 5.7 | 117 | 6.5 | Prediabetes |
| 6.5 | 140 | 7.8 | Diabetes threshold |
| 7.0 | 154 | 8.6 | Diabetes |
| 9.0 | 212 | 11.8 | Poorly controlled |
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