A1C Calculator | A1C to eAG Calculator


What Is A1C & A1C calculator?

A1C, also known as HbA1c, is a blood test that reflects your average blood glucose levels over the past two to three months. It measures the percentage of hemoglobin (a protein in red blood cells) that is coated with sugar (glycated).

An A1C calculator is a simple tool that converts your A1C percentage into an estimated average blood glucose (eAG) level, usually expressed in mg/dL (milligrams per deciliter) or mmol/L (millimoles per liter)—units you're more likely to see on a home glucose meter.

Example:

If your A1C is 7.0%, an A1C calculator will show your estimated average blood sugar is about 154 mg/dL (8.6 mmol/L).

Why Use an A1C Calculator?

1. Makes Results Easier to Understand

Most people find it easier to understand blood sugar numbers in mg/dL or mmol/L than a percentage.

2. Tracks Progress More Clearly

If you’re working on lowering your A1C, seeing how much that actually affects your daily levels helps motivate better control.

3. Supports Better Communication

An A1C calculator helps you and your healthcare provider talk in the same language when reviewing progress and adjusting treatment.

A1C to Estimated Average Glucose (eAG) Calculator

What the Result Means:

The A1C test measures the average blood sugar levels over the past 2–3 months. The result is shown as a percentage and can be converted to an estimated average glucose (eAG) in mg/dL for easier interpretation.

  • Normal: A1C below 5.7% (eAG below ~117 mg/dL)
  • Prediabetes: A1C between 5.7% and 6.4% (eAG ~117–137 mg/dL)
  • Diabetes: A1C 6.5% or higher (eAG 140 mg/dL and above)

What Action to Take Based on the Result:

  • Normal:
  • Maintain healthy lifestyle habits such as a balanced diet and regular physical activity. Routine screening every 1–3 years is recommended based on your risk factors.

  • Prediabetes:
  • Implement lifestyle changes like improved diet, weight loss, and exercise. Consult with a healthcare provider to monitor progression and explore preventive treatments.

  • Diabetes:
  • Work with your healthcare provider to develop a comprehensive diabetes management plan, which may include medication, insulin therapy, frequent monitoring, and lifestyle modifications.