From A1c to eAG: A Simple Conversion Chart and Calculator

23 Aug 2025

From A1c to eAG: A Simple Conversion Chart and Calculator Understanding your blood sugar levels is crucial for managing diabetes or prediabetes. Two k...

From A1c to eAG: A Simple Conversion Chart and Calculator

Understanding your blood sugar levels is crucial for managing diabetes or prediabetes. Two key metrics used by healthcare professionals are A1c (Hemoglobin A1c) and eAG (estimated Average Glucose). While A1c represents your average blood sugar over the past 2-3 months, eAG provides an estimate of your average glucose level on a daily basis. This article breaks down the relationship between A1c and eAG, provides a convenient conversion chart, and offers a calculator to simplify the conversion.

Related reading: What Is A Normal Blood Sugar Level The Definitive Answer

What are A1c and eAG?

Before diving into the conversion, let's clarify what each measurement represents:

  • Related reading: Stabilize Your Blood Sugar A Daily Routine For Optimal Control

    A1c (Hemoglobin A1c): The A1c test measures the percentage of your hemoglobin that is coated with glucose (sugar). Hemoglobin is a protein in red blood cells that carries oxygen. Higher A1c levels indicate higher average blood sugar levels over the past 2-3 months, reflecting how well your blood sugar has been controlled over that period. This makes it a valuable tool for diagnosing prediabetes and diabetes and for monitoring blood sugar control in people with diabetes.

  • eAG (Estimated Average Glucose): eAG is an estimate of your average blood glucose level over a period, presented in the same units (mg/dL) that people with diabetes typically use to monitor their daily blood sugar. It's essentially a "translation" of the A1c value into a number that's more familiar and easier to understand for many individuals. The eAG helps patients relate their A1c result to their daily blood sugar readings.

Why Convert A1c to eAG?

While A1c is the standard metric used by doctors, eAG can be more easily understood by patients. Many individuals find it easier to relate to a daily glucose number (eAG) compared to a percentage (A1c). Converting A1c to eAG provides a clearer picture of your average blood sugar levels and can help you better manage your diabetes or prediabetes. This is particularly helpful when discussing treatment plans with your doctor and making informed decisions about your health. Understanding eAG can empower you to take a more active role in managing your blood sugar.

A1c to eAG Conversion Chart

This chart provides a quick reference for converting A1c to eAG:

A1c (%) eAG (mg/dL) eAG (mmol/L)
6.0 126 7.0
6.5 140 7.8
7.0 154 8.6
7.5 169 9.4
8.0 183 10.2
8.5 197 11.0
9.0 212 11.8
9.5 226 12.6
10.0 240 13.3
10.5 255 14.2
11.0 269 14.9
11.5 283 15.7
12.0 298 16.5

Note: These values are approximate. Consult your doctor for personalized advice. The chart includes values in both mg/dL and mmol/L to cater to different regional standards.

A1c to eAG Conversion Calculator

For more precise conversions, you can use the following formulas or an online calculator:

  • eAG (mg/dL) = (28.7 x A1c) - 46.7
  • eAG (mmol/L) = (1.59 x A1c) - 2.59

Related reading: What Are Normal Blood Sugar Levels A Complete Chart For All Ages

Example:

Let's say your A1c is 7.3%. Using the formula:

  • eAG (mg/dL) = (28.7 x 7.3) - 46.7 = 162.41 mg/dL (approximately 162 mg/dL)
  • eAG (mmol/L) = (1.59 x 7.3) - 2.59 = 9.017 mmol/L (approximately 9.0 mmol/L)

Several online calculators can also perform this conversion automatically. Search for "A1c to eAG calculator" on your preferred search engine.

Factors Affecting A1c and eAG

It's important to remember that A1c and eAG are estimates. Several factors can affect these measurements, including:

  • Anemia and other blood disorders: Conditions affecting red blood cells can alter the accuracy of A1c readings.
  • Kidney disease: Kidney disease can also impact A1c levels.
  • Pregnancy: A1c levels can be lower during pregnancy.
  • Ethnicity: Some studies suggest that A1c values may differ slightly among different ethnic groups.
  • Hemoglobin variants: Certain genetic variations in hemoglobin can interfere with A1c testing.

These factors highlight the importance of discussing your A1c and eAG results with your doctor to receive personalized interpretation and guidance.

Understanding Your Results

Knowing your A1c and eAG levels is only the first step. Understanding what these numbers mean for your health is equally important. Here's a general guideline:

  • Normal: An A1c below 5.7% is considered normal. The corresponding eAG would be below 114 mg/dL (6.3 mmol/L).
  • Prediabetes: An A1c between 5.7% and 6.4% indicates prediabetes. The corresponding eAG would be between 114 mg/dL and 139 mg/dL (6.3 mmol/L and 7.7 mmol/L). This means you have a higher risk of developing type 2 diabetes.
  • Diabetes: An A1c of 6.5% or higher indicates diabetes. The corresponding eAG would be 140 mg/dL (7.8 mmol/L) or higher.

These ranges are based on American Diabetes Association (ADA) guidelines. Your doctor may have different recommendations based on your individual circumstances. Regular monitoring and appropriate management strategies are vital for maintaining healthy blood sugar levels and preventing long-term complications.

Improving Your A1c and eAG

If your A1c or eAG is outside the target range, there are several steps you can take to improve your blood sugar control:

  • Dietary Changes: Focus on a balanced diet that includes plenty of fruits, vegetables, and whole grains. Limit processed foods, sugary drinks, and saturated fats. Consider consulting with a registered dietitian or certified diabetes educator for personalized meal planning.
  • Regular Exercise: Aim for at least 30 minutes of moderate-intensity exercise most days of the week. Physical activity helps your body use insulin more effectively and lowers blood sugar levels.
  • Medication: If lifestyle changes are not enough to achieve your target blood sugar levels, your doctor may prescribe medication. It's crucial to take your medication as prescribed and monitor your blood sugar levels regularly.
  • Regular Monitoring: Regularly check your blood sugar levels as recommended by your doctor. This will help you understand how your body responds to food, exercise, and medication, and make necessary adjustments to your treatment plan.
  • Stress Management: Stress can significantly impact blood sugar levels. Find healthy ways to manage stress, such as yoga, meditation, or spending time in nature.
  • Adequate Sleep: Aim for 7-8 hours of quality sleep per night. Poor sleep can lead to insulin resistance and higher blood sugar levels.

By actively managing your lifestyle and working closely with your healthcare team, you can achieve and maintain healthy A1c and eAG levels. Remember, managing diabetes or prediabetes is a lifelong journey that requires commitment and ongoing support.

Conclusion

Converting A1c to eAG can provide a clearer understanding of your blood sugar control and empower you to make informed decisions about your health. Use the chart, calculator, and formulas provided in this article to easily convert between these two important metrics. However, remember that these are just tools for understanding. Always consult with your healthcare provider for personalized guidance and treatment. Managing your blood glucose effectively is crucial for preventing complications and living a healthy life. Regularly tracking your A1c levels and understanding their relationship to eAG values will help you stay informed and proactive in managing your diabetes or prediabetes.