A1C Calculator
Use this calculator to estimate your HbA1c (A1C) level from blood glucose readings, or convert between A1C and estimated Average Glucose (eAG). Enter your glucose readings below and configure your settings for accurate results.
Blood Glucose Readings
Label / Date
Glucose Value
Settings
Results
0.0%
Estimated A1C
| Average Glucose (eAG) | — mg/dL |
| Total Readings | 0 |
| Highest Reading | — |
| Lowest Reading | — |
| Std. Deviation | — |
| Label / Date | Reading | vs. Avg | Est. A1C |
|---|
Note: This calculator uses the Nathan formula: A1C (%) = (Average Glucose + 46.7) / 28.7 for mg/dL. Results are estimates only. Consult your healthcare provider for clinical A1C testing and diagnosis.
A1C ↔ eAG Converter
Convert between A1C percentage and estimated Average Glucose (eAG) value. Enter either value to instantly compute the other.
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