A1C to Blood Sugar Checker
Wondering what your A1C number really means? Use our free A1C calculator to translate your lab result into an estimated average blood glucose (eAG) level in mg/dL — and understand your diabetes control better.
* This calculator provides an estimated average glucose (eAG) based on your A1C value. Please discuss your results with your healthcare provider before making any medical decisions.
What is A1C?
A1C (also called HbA1c or glycated hemoglobin) measures the percentage of sugar-bound hemoglobin in your blood. Since red blood cells live for about 3 months, the A1C test gives you a snapshot of your average blood sugar over that time.
A1C vs. Estimated Average Glucose
| A1C (%) | eAG (mg/dL) |
|---|---|
| 6.0 | 126 |
| 6.5 | 140 |
| 7.0 | 154 |
| 7.5 | 169 |
| 8.0 | 183 |
| 8.5 | 197 |
| 9.0 | 212 |
| 9.5 | 226 |
| 10.0 | 240 |
Want a personalized result? Just enter your A1C above to get your eAG instantly.
What Does Your A1C Mean?
- Below 5.7% – Normal
- 5.7% to 6.4% – Prediabetes
- 6.5% or higher – Diabetes diagnosis
The American Diabetes Association recommends an A1C below 7% for most adults with diabetes. However, targets may vary based on age, medical conditions, or pregnancy. Always consult your doctor for your individual goal.
How Often Should You Get Tested
The ADA suggests an A1C test:
- Every 6 months if your diabetes is stable
- Every 3 months if your treatment plan is changing or not working
Why Self-Monitoring Still Matters
While the A1C is a powerful long-term marker, it doesn’t reflect daily fluctuations. Someone with frequent highs and lows might still have a “normal” A1C. That’s why regular home glucose checks — plus your A1C — give the full picture.
Lower A1C, Lower Risk
Keeping your A1C within range reduces your risk for complications like:
- Nerve damage
- Vision loss
- Kidney problems
- Heart disease