HbA1c to eAG Converter
Instantly convert glycated hemoglobin (HbA1c %) into Estimated Average Glucose (eAG) in mg/dL and mmol/L.
HbA1c is 6.5% or higher. Meets diagnostic criterion for diabetes mellitus.
Medsy automatically calculates eAG and tracks longitudinal trends directly inside patient records.
Explore Medsy EMR →HbA1c to eAG Reference Comparison Table
| HbA1c (%) | eAG (mg/dL) | eAG (mmol/L) | ADA Clinical Status |
|---|---|---|---|
| 5.0% | 97 mg/dL | 5.4 mmol/L | Normal |
| 5.5% | 111 mg/dL | 6.2 mmol/L | Normal |
| 6.0% | 126 mg/dL | 7.0 mmol/L | Prediabetes |
| 6.5% | 140 mg/dL | 7.8 mmol/L | Diabetes Cutoff |
| 7.0% | 154 mg/dL | 8.6 mmol/L | ADA Target for Diabetics |
| 8.0% | 183 mg/dL | 10.2 mmol/L | Action Required |
| 9.0% | 212 mg/dL | 11.8 mmol/L | Uncontrolled Hyperglycemia |
How the ADA Formula Works
The A1C-Derived Average Glucose (ADAG) study, led by Dr. David Nathan and published in Diabetes Care, evaluated over 500 patients using continuous glucose monitoring and frequent blood glucose checks over 3 months.
Frequently Asked Questions
Why does eAG differ from my glucose meter?
eAG is a 90-day average including post-meal spikes and sleeping hours, whereas finger-stick meters show instantaneous spot values.
Can conditions alter HbA1c accuracy?
Yes. Hemoglobinopathies, severe anemia, recent blood transfusion, or pregnancy can impact HbA1c readings. Clinicians should correlate with fructosamine or continuous glucose logs.