Estimated Average Glucose (eAG)
140 mg/dL
(7.8 mmol/L)
Your blood sugar is in the diabetes range. Consult your healthcare provider for management options.
Your A1C of 6.5% reflects your average blood sugar over the past 2-3 months. This means your blood sugar has been averaging around 140 mg/dL (7.8 mmol/L) during this period.
What This Means
Factors That Can Affect Accuracy
Most adults with diabetes
Target: Below 7.0%
Older adults / complex conditions
Target: Below 8.0%
Pregnancy (GDM)
Target: Below 6.0%
Non-diabetic (healthy)
Target: Below 5.7%
| A1C (%) | eAG (mg/dL) | eAG (mmol/L) | Classification |
|---|---|---|---|
| 4.0% | 68 | 3.8 | Normal |
| 4.5% | 82 | 4.6 | Normal |
| 5.0% | 97 | 5.4 | Normal |
| 5.5% | 111 | 6.2 | Normal |
| 5.7% | 117 | 6.5 | Prediabetes |
| 6.0% | 126 | 7.0 | Prediabetes |
| 6.5%You | 140 | 7.8 | Diabetes |
| 7.0% | 154 | 8.6 | Diabetes |
| 7.5% | 169 | 9.4 | Diabetes |
| 8.0% | 183 | 10.2 | Diabetes |
| 8.5% | 197 | 10.9 | Diabetes |
| 9.0% | 212 | 11.8 | Diabetes |
| 9.5% | 226 | 12.6 | Diabetes |
| 10.0% | 240 | 13.4 | Diabetes |
| 10.5% | 255 | 14.2 | Diabetes |
| 11.0% | 269 | 14.9 | Diabetes |
| 11.5% | 283 | 15.7 | Diabetes |
| 12.0% | 298 | 16.5 | Diabetes |
A1C to Blood Sugar
eAG (mg/dL) = 28.7 x A1C - 46.7
Example: 28.7 x 6.5 - 46.7 = 139.8 mg/dL
Blood Sugar to A1C
A1C = (eAG + 46.7) / 28.7
Example: (140 + 46.7) / 28.7 = 6.5%
Based on the ADAG (A1C-Derived Average Glucose) study published in Diabetes Care. This formula is endorsed by the American Diabetes Association and used internationally.
mg/dL to mmol/L
Divide by 18.0182
mmol/L to mg/dL
Multiply by 18.0182
mg/dL is used primarily in the US. mmol/L is the international standard used in most other countries.
This calculator provides estimates based on the ADAG study formula. Individual results may vary. The eAG is an approximation and does not replace regular blood glucose monitoring. Always consult your healthcare provider for medical advice, diagnosis, and treatment decisions. Do not make changes to your medication or treatment based solely on this calculator.