What Is an eAG/A1C Conversion Calculator?
An eAG/A1C conversion calculator is a tool that helps you convert your HbA1c (glycated hemoglobin) percentage into an estimated average glucose (eAG) level, and vice versa. This conversion allows people with diabetes to better understand how their long-term glucose control translates into daily blood sugar readings.
Why eAG and A1C Are Important
HbA1c reflects your average blood sugar levels over the past 2 to 3 months. However, many people find it easier to interpret their diabetes control in terms of daily glucose values. The eAG provides a more relatable number by converting the A1C percentage into the same units used in daily glucose monitoring.
How the Conversion Works
The relationship between HbA1c and eAG is based on established clinical studies. The American Diabetes Association provides the following formula to convert A1C to eAG:
eAG (mg/dL) = (28.7 × A1C) − 46.7
If you have a glucose value and want to estimate the corresponding A1C, the reverse formula is used:
A1C (%) = (eAG + 46.7) ÷ 28.7
Reference Ranges
| Category | eAG (mg/dL) | A1C (%) |
|---|---|---|
| Normal | 70-126 mg/dL | 4.0-5.6% |
| Pre-diabetes | 126-154 mg/dL | 5.7-6.4% |
| Diabetes | Above 154 mg/dL | 6.5% or higher |
Who Should Use This Calculator
- People with diabetes tracking their long-term glucose control.
- Healthcare providers explaining A1C results to patients.
- Anyone wanting to better understand how their lab results translate to daily numbers.
Limitations of the Calculator
- It provides an estimate and is not a substitute for medical advice.
- Factors like anemia, pregnancy, and certain medical conditions can affect A1C accuracy.
- Always consult your healthcare provider for personalized health decisions.