A1C Levels Chart

Your comprehensive guide to understanding Hemoglobin A1c. Explore target levels, estimate your A1C, and learn crucial insights for better health management.

Estimate Your A1C

General Population

Without Diabetes

Target: Below 5.7%

Regular screening recommended for adults over 45 or those with risk factors.

Learn More & Tips:
  • Prediabetes is a serious health condition where blood sugar levels are higher than normal, but not high enough yet to be diagnosed as type 2 diabetes.
  • About 96 million American adults—more than 1 in 3—have prediabetes.
  • Without intervention, prediabetes often leads to type 2 diabetes within 5 years.
Interpretation Guide
  • < 5.7%Normal
  • 5.7% - 6.4%Prediabetes
  • ≥ 6.5%Diabetes

Adults with Diabetes

Pregnancy

Children and Adolescents

Did You Know?

How often does A1C reflect blood sugar changes?

A1C tests reflect your average blood sugar levels over the past 2 to 3 months, with more weight given to the most recent month.

Can A1C be 100% accurate for everyone?

Certain conditions like severe anemia, kidney failure, or liver disease, as well as some medications and hemoglobin variants, can affect A1C accuracy. Always discuss your full health picture with your doctor.

What's the difference between A1C and daily glucose checks?

Daily glucose checks measure your blood sugar at a specific moment. A1C provides a longer-term average, giving a broader picture of your blood sugar management over time.