Hemoglobin A1c (HbA1c) is a key marker used to assess your average blood sugar levels over the past 2–3 months. It reflects how much glucose is attached to your red blood cells, and is widely used by healthcare providers to diagnose and monitor diabetes and prediabetes.

Our HbA1c to Average Blood Sugar Calculator helps you convert your HbA1c percentage into an estimated average blood glucose level in mg/dL, making it easier to understand your readings in daily terms.

How the Calculation Works:

The formula used to convert HbA1c to estimated average blood sugar is:

Average Blood Sugar (mg/dL) = HbA1c (%) × 28.7 – 46.7

This equation is derived from studies that correlate HbA1c with daily glucose monitoring data.

Why It Matters:

• Normal HbA1c: Below 5.7%

• Prediabetes: 5.7% to 6.4%

• Diabetes: 6.5% or higher

Understanding your HbA1c in terms of average blood sugar allows for better day-to-day monitoring and helps you take proactive steps in managing your health.

Tips for Lowering HbA1c:

• Eat a balanced, low-glycemic diet

• Exercise regularly (aim for 150+ minutes/week)

• Manage stress and sleep

• Monitor your blood sugar levels consistently

• Follow your healthcare provider’s advice