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A1C to Average Glucose Converter
Your A1C shows your average blood sugar over the past 2–3 months. This calculator converts it to estimated average glucose (eAG) using the formula from the ADAG study: eAG (mg/dL) = 28.7 × A1C − 46.7.
154 mg/dL
8.5 mmol/L · Diabetes range
≈ 7% A1C
A1C chart
| A1C | eAG mg/dL | eAG mmol/L | Range |
|---|---|---|---|
| 5% | 97 | 5.4 | Normal range |
| 5.5% | 111 | 6.2 | Normal range |
| 5.7% | 117 | 6.5 | Prediabetes range |
| 6% | 125 | 6.9 | Prediabetes range |
| 6.5% | 140 | 7.8 | Diabetes range |
| 7% | 154 | 8.5 | Diabetes range |
| 7.5% | 169 | 9.4 | Diabetes range |
| 8% | 183 | 10.2 | Diabetes range |
| 9% | 212 | 11.8 | Diabetes range |
| 10% | 240 | 13.3 | Diabetes range |
| 11% | 269 | 14.9 | Diabetes range |
| 12% | 298 | 16.5 | Diabetes range |
Ranges follow American Diabetes Association cut-offs (normal below 5.7%, prediabetes 5.7–6.4%, diabetes 6.5% or higher). eAG is an estimate; anaemia, kidney disease and some haemoglobin variants can make A1C less accurate. This tool is educational and does not diagnose.