eAG Calculator
Enter the required values below to run the educational estimation.
eAG vs. Daily Finger-Stick Readings
It is common for your daily home glucose monitor readings to be different from your calculated eAG. Home checks are single measurements taken at specific moments (such as fasting in the morning), while eAG represents a weighted average of your blood sugar over 90 days, including sleep, post-meal spikes, and active hours.
Limitations of eAG Calculations
Conditions that alter the lifespan of red blood cells (such as anemia, sickle cell trait, pregnancy, blood loss, or recent transfusions) interfere with the glycosylation rate. In these cases, the A1C reading and the resulting eAG calculation will not accurately reflect blood sugar patterns.
When to Seek Urgent Medical Attention
- Symptoms of severe hyperglycemia (extreme thirst, rapid breathing, fruit-scented breath).
- Severe hypoglycemic events (confusion, sweating, tremors, inability to stay awake).
- Fainting or loss of consciousness.
Frequently Asked Questions
eAG is an estimated average of your blood sugar levels over the past 2-3 months, expressed in the same mg/dL or mmol/L units used in daily finger-stick checks.
A1C measures the percentage of hemoglobin with attached glucose. The American Diabetes Association uses the formula: $\text{eAG (mg/dL)} = 28.7 \times \text{A1C} - 46.7$ to help patients relate A1C to home glucose readings.
