A1C Calculator

Choose conversion type
Enter a value from 3.0% to 20.0%.
Enter a value from 40 to 600 mg/dL.

Your Result

Estimated A1C 7.0%
Average glucose 154 mg/dL
Average glucose 8.6 mmol/L
General category Diabetes range

This estimate is equal to the entered target of 7.0%.

Note: This calculator is for educational purposes only and does not diagnose diabetes or replace medical advice.

About the A1C Calculator

Use this calculator to convert an A1C percentage into estimated average glucose in mg/dL and mmol/L, or convert average glucose back into an estimated A1C percentage. The result is an estimate and should be interpreted with help from a qualified healthcare professional.