Enter the Hemoglobin level into the calculator to determine the estimated Average Glucose level.

Hgb To A1C Formula

The following formula is used to calculate the A1C level from Hgb level.

A1C = (Hgb * 0.0915) + 2.15


  • A1C is the estimated Average Glucose (eAG) level (%) Hgb is the Hemoglobin level (g/dL)

To calculate the A1C level, multiply the Hemoglobin level by 0.0915, then add 2.15 to the result. Please note that this formula is a rough estimation and may not be accurate for all individuals. Always consult with a healthcare professional for accurate information.

What is a Hgb To A1C?

Hgb to A1C, also known as Hemoglobin to Hemoglobin A1C, is a conversion that refers to a blood test that measures the average level of blood sugar (glucose) over the past 2 to 3 months. Hemoglobin is a protein in red blood cells that carries oxygen, and Hemoglobin A1C is a subtype of hemoglobin that is chemically linked to a sugar. The higher the level of glucose in the blood, the higher the level of hemoglobin A1C, and by measuring it, doctors can get an overall picture of average blood sugar levels over a period of weeks/months. This test is commonly used to diagnose and monitor diabetes.

How to Calculate Hgb To A1C?

The following steps outline how to calculate the Hgb To A1C using the given formula:

  1. First, determine the Hemoglobin level (Hgb) in g/dL.
  2. Next, multiply the Hemoglobin level (Hgb) by 0.0915.
  3. Add 2.15 to the result obtained in step 2.
  4. Finally, the calculated value is the estimated Average Glucose (eAG) level (A1C) in %.

Example Problem:

Use the following variables as an example problem to test your knowledge:

Hemoglobin level (Hgb) = 12 g/dL

Using the formula A1C = (Hgb * 0.0915) + 2.15, we can calculate the estimated Average Glucose (eAG) level (A1C).