The Ultimate Blood Sugar Conversion Chart: A1C, eAG, mg/dL & mmol/L

23 Aug 2025

The Ultimate Blood Sugar Conversion Chart: A1C, eAG, mg/dL & mmol/L Understanding your blood sugar levels is crucial, especially if you are managi...

The Ultimate Blood Sugar Conversion Chart: A1C, eAG, mg/dL & mmol/L

Understanding your blood sugar levels is crucial, especially if you are managing diabetes or concerned about your metabolic health. However, the different units used to measure blood glucose, such as mg/dL, mmol/L, A1C, and eAG, can be confusing. This comprehensive guide provides a clear and concise blood sugar conversion chart to help you easily navigate and interpret your results, enabling you to take better control of your health.

Why is Understanding Blood Sugar Conversion Important?

Related reading: Impaired Fasting Glucose What This Diagnosis Means And Your Next Steps

Different countries and even different labs within the same country may use different units to report blood glucose levels. Understanding the conversions allows you to:

  • Accurately interpret your lab results, regardless of the unit used.
  • Communicate effectively with healthcare professionals, even if they use a different measurement system.
  • Track your blood sugar trends consistently, regardless of the testing method.
  • Make informed decisions about your diet, exercise, and medication based on a clear understanding of your blood glucose levels.

The Key Players: Units of Blood Sugar Measurement

Before diving into the conversion chart, let’s define the main units you’ll encounter:

  • mg/dL (milligrams per deciliter): This is the standard unit used in the United States and many other countries to measure blood glucose at a specific point in time.

  • mmol/L (millimoles per liter): This is the unit commonly used in Canada, Europe, and other parts of the world for measuring blood glucose at a specific point in time.

  • A1C (Hemoglobin A1c): This test measures your average blood sugar level over the past 2-3 months. It reflects the percentage of your hemoglobin that has glucose attached to it. A1C is expressed as a percentage.

  • eAG (estimated Average Glucose): eAG provides an estimated average blood glucose level corresponding to the A1C test. It is expressed in either mg/dL or mmol/L, depending on your location and preference, making it easier to relate to your daily blood glucose readings.

Blood Sugar Conversion Chart: A1C to eAG (mg/dL & mmol/L) and Vice Versa

This table provides a quick reference for converting between A1C, eAG (mg/dL), and eAG (mmol/L).

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 10.9
9.0 212 11.8
9.5 226 12.6
10.0 240 13.4
10.5 255 14.2
11.0 269 14.9
11.5 283 15.7
12.0 298 16.5

Note: These are approximate conversions. Individual results may vary slightly.

Converting mg/dL to mmol/L and Vice Versa

This is a direct conversion, as it involves a single multiplication or division.

Understanding Healthy Blood Sugar Ranges

Understanding the target ranges for blood glucose is just as important as understanding the conversion rates. These ranges can vary slightly depending on individual factors, such as age, overall health, and specific diabetes management goals. However, general guidelines are provided below:

Measurement Target Range (General) Target Range (Diabetic - ADA Recommendations)
Fasting **Blood Sugar** (mg/dL) 70-99 80-130
Fasting **Blood Sugar** (mmol/L) 3.9-5.5 4.4-7.2
2-Hour Postprandial **Blood Sugar** (mg/dL) Less than 140 Less than 180
2-Hour Postprandial **Blood Sugar** (mmol/L) Less than 7.8 Less than 10.0
A1C (%) Less than 5.7 Less than 7.0
  • Fasting Blood Sugar: Measured after at least 8 hours of fasting.
  • 2-Hour Postprandial Blood Sugar: Measured 2 hours after the start of a meal.
  • A1C: Reflects average blood sugar levels over the past 2-3 months.

It's vital to discuss your individual target ranges with your healthcare provider, as they can tailor these to your specific needs.

Factors Affecting Blood Sugar Levels

Many factors can influence blood sugar levels, including:

  • Diet: The type and amount of carbohydrates you consume have the most significant impact.
  • Physical Activity: Exercise can help lower blood sugar levels.
  • Medications: Insulin and other diabetes medications directly affect blood glucose.
  • Stress: Stress hormones can increase blood sugar levels.
  • Illness: Infections and other illnesses can affect blood glucose control.
  • Sleep: Lack of sleep can increase insulin resistance and raise blood sugar levels.

Tips for Maintaining Healthy Blood Sugar Levels

  • Follow a Balanced Diet: Focus on whole, unprocessed foods, including fruits, vegetables, lean protein, and whole grains.
  • Engage in Regular Physical Activity: Aim for at least 30 minutes of moderate-intensity exercise most days of the week.
  • Monitor Your Blood Sugar Regularly: Use a blood glucose meter to check your levels as directed by your healthcare provider.
  • Take Medications as Prescribed: Adhere to your medication schedule and dosage instructions.
  • Manage Stress: Practice stress-reducing techniques such as meditation, yoga, or deep breathing.
  • Get Enough Sleep: Aim for 7-8 hours of quality sleep per night.
  • Work Closely with Your Healthcare Team: Regularly consult with your doctor, certified diabetes educator, and registered dietitian to optimize your blood sugar control.

Common Mistakes to Avoid When Monitoring Blood Sugar

  • Using Expired Test Strips: Always check the expiration date to ensure accurate results.
  • Not Washing Your Hands: Clean hands are essential to avoid contaminating the test sample.
  • Improper Meter Calibration: Make sure your meter is calibrated correctly according to the manufacturer’s instructions.
  • Inconsistent Testing Times: Test at the same times each day to establish accurate trends.
  • Ignoring Symptoms: Be aware of symptoms of high (hyperglycemia) and low (hypoglycemia) blood sugar, and take appropriate action.

Conclusion: Empowering You with Blood Sugar Knowledge

Understanding blood sugar conversion is a vital tool for anyone managing diabetes or seeking to improve their overall health. By using this comprehensive guide and blood sugar conversion chart, you can confidently interpret your lab results, track your progress, and make informed decisions about your well-being. Remember to consult with your healthcare provider for personalized guidance and treatment. With the right knowledge and support, you can take control of your blood sugar and live a healthier, more fulfilling life.