This glucose to a1c reference table shows the estimated hba1c for a range of average glucose values. Every figure is computed with the same engine that powers our Glucose to A1C Calculator, so the numbers are exact.
| Average glucose | Estimated HbA1c |
|---|---|
| 39 mg/dL | 3.0% |
| 77 mg/dL | 4.3% |
| 120 mg/dL | 5.8% |
| 150 mg/dL | 6.9% |
| 230 mg/dL | 9.6% |
| 310 mg/dL | 12.4% |
| 460 mg/dL | 17.7% |
| 770 mg/dL | 28.5% |
| 1,100 mg/dL | 40.0% |
| 1,500 mg/dL | 53.9% |
How to use this table
Find the row closest to your average glucose and read across to the estimated hba1c. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Glucose to A1C Calculator for a precise answer.
Need a value that is not in the table? — the Glucose to A1C Calculator does it instantly, for free, with the formula and a worked example built in.
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