A1C Calculator
Convert between A1C and average blood glucose. See diabetes risk classification.
Your A1C
5.7%
Prediabetes
Estimated Avg. Glucose
117 mg/dL
Avg. Glucose (mmol/L)
6.5
A1C Categories
| Normal | < 5.7% |
| Prediabetes | 5.7% – 6.4% |
| Diabetes | ≥ 6.5% |
A1C to Average Glucose Reference
| 5.0% | 97 mg/dL |
| 5.5% | 111 mg/dL |
| 6.0% | 126 mg/dL |
| 6.5% | 140 mg/dL |
| 7.0% | 154 mg/dL |
| 8.0% | 183 mg/dL |
| 9.0% | 212 mg/dL |
A1C reflects average blood glucose over the past 2–3 months. Formula: eAG (mg/dL) = 28.7 × A1C − 46.7. Individual results may vary. Consult your healthcare provider for diagnosis and treatment.
Use the A1C Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
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