HbA1c ↔ Average Glucose Converter
Enter your HbA1c and instantly see your estimated 3-month average glucose and whether it falls in the normal, prediabetes, or diabetes range.
Enter HbA1c
Drag the slider or type a value (4.0 – 15.0%)
Formula (ADAG · ADA 2008)
eAG(mg/dL) = 28.7 × HbA1c − 46.7
eAG(mmol/L) = eAG(mg/dL) ÷ 18.0182
📊 Result
eAG (mg/dL)
154
eAG (mmol/L)
8.6
Estimated HbA1c
7%
HbA1c 6.5% or higher
※ The ADAG estimated average glucose comes from a statistical regression built on large clinical data and may differ from your actual measured glucose.
※ Anemia, pregnancy, chronic kidney disease, or hemoglobinopathies can change the relationship between HbA1c and true average glucose. Diabetes can only be confirmed by clinical testing.
🎯 Average glucose by target HbA1c
If you have a target HbA1c, your usual estimated average glucose should be around these levels.
| Target HbA1c | Avg. glucose (mg/dL) | Avg. glucose (mmol/L) |
|---|---|---|
| 5.5% | 111 | 6.2 |
| 6.0% | 125 | 7 |
| 6.5% | 140 | 7.8 |
| 7.0% | 154 | 8.6 |
| 7% · Current input | 154 | 8.6 |
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