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Easily convert HbA1c to average glucose with our A1C calculator. Understand your blood sugar levels using our HbA1c conversion chart and formula.
Understanding your blood sugar levels is essential for managing diabetes and overall health. The HbA1c to Average Glucose Calculator helps you quickly convert HbA1c percentages into estimated average blood glucose (eAG) in mg/dL or mmol/L. Whether you're tracking your A1C at home or need to interpret lab results, this tool simplifies the conversion.
A1C, also known as HbA1c (glycated hemoglobin), provides an average of blood sugar levels over the past 2 to 3 months. It is crucial for people with diabetes to monitor their HbA1c levels to manage their condition effectively.
Hemoglobin A1c (HbA1c) is a blood test that measures the percentage of glucose attached to hemoglobin in red blood cells. Since red blood cells live for around 90–120 days, HbA1c reflects the average glucose levels over this period.
Higher HbA1c values indicate higher blood sugar levels and an increased risk of diabetes complications. Converting HbA1c to average glucose helps understand daily blood sugar readings in a more familiar format.
The formula to calculate estimated average glucose (eAG) from HbA1c is:
eAG (mg/dL) = (28.7 × HbA1c) − 46.7
For mmol/L conversion:
eAG (mmol/L) = (HbA1c × 1.59) − 2.59
For example, if your HbA1c is 7.0%:
eAG = (28.7 × 7) − 46.7 = 154 mg/dL
This means an HbA1c of 7.0% is equivalent to an average blood glucose level of 154 mg/dL (8.6 mmol/L).
| HbA1c (%) | Avg. Glucose (mg/dL) | Avg. Glucose (mmol/L) |
|---|---|---|
| 4.0% | 68 | 3.8 |
| 5.0% | 97 | 5.4 |
| 5.7% | 117 | 6.5 |
| 6.0% | 126 | 7.0 |
| 6.5% | 140 | 7.8 |
| 7.0% | 154 | 8.6 |
| 8.0% | 183 | 10.2 |
| 9.0% | 212 | 11.8 |
| 10.0% | 240 | 13.3 |
Using our A1C calculator is simple:
This tool makes it easy to interpret your A1C test results and understand daily blood sugar control.
While HbA1c represents a long-term average, some people want to estimate it from a single fasting or random blood sugar reading.
A rough estimation formula:
HbA1c ≈ (AverageGlucose (mg/dL) + 46.7) / 28.7
For example, if your average blood sugar is 140 mg/dL:
HbA1c = (140 + 46.7) / 28.7 = 6.5%
This method is an approximation, and actual HbA1c results may vary due to individual differences.
The HbA1c to Average Blood Sugar Calculator is a useful tool for diabetes management. It helps convert HbA1c results into estimated glucose levels, making it easier to track blood sugar trends. Regular HbA1c testing and monitoring daily glucose levels help in preventing diabetes complications and improving overall health.
An HbA1c of 5.7% corresponds to an estimated average glucose of 117 mg/dL.
Use the formula:
eAG = (28.7 × HbA₁c) − 46.7
Yes, you can use home A1C test kits, but they are not as accurate as lab tests.
A normal HbA1c is below 5.7%. Pre-diabetes is between 5.7% and 6.4%, while diabetes is 6.5% or higher.
The formula provides an estimate, but actual HbA1c results may vary based on health conditions and glucose fluctuations.