Follow Us On:

Your Result is copied!

A1C Calculator

Provide the value of the average blood sugar reading to this A1C calculator and get the A1C percentage within seconds.

percent (%)




Add this calculator to your site


Determine the average glucose level in the blood with the help of this free A1C calculator.

This tool is solely designed to improve the control of glucose levels in the blood and to understand the relationship between A1C and EAG (Estimated Average Glucose). 

Understanding What Does A1C Measure?

The A1C test is done to measure the amount of sugar attached to hemoglobin. Hemoglobin is a protein that is present in the red blood cells of your body.

The glucose that goes inside your bloodstream, sticks to the hemoglobin. The higher your blood sugar goes, the more sugar sticks to the hemoglobin. 

The lifespan of a blood cell is four months. A1C shows the average blood sugar level over the past 2 to 3 months.

The A1C test helps in determining the state of the sugar and tells in which state you are such as diabetic, prediabetic, or normal. 

How To Calculate A1C Percentage?

The hemoglobin A1C test is the best way to calculate the glucose percentage in the blood. It tells whether the diabetes is controlled or not.

Getting the test every three months is good for everyone. By using the following formula you can easily perform the A1C calculator according to the data that is received from the daily sugar test. 

Glucose in mg/dL:

For blood sugar conversion to A1C use the following formula:

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

Glucose in mmol/L:

For converting the hemoglobin A1c from percent to millimoles, utilize the following equation:

HbA1c (mmol/mol) = HbA1c (%) × 10.93 - 23.5

mmol/mol to percent:

To calculate mmol/mol to percent, put values in the following formula:

HbA1c (%) = HbA1c (mmol/mol) × 0.09148 + 2.152

Blood Glucose To A1C:

In the following table, we have provided the blood sugar level in the mg/dl and their corresponding A1C values.

With the help of this table and the following a1c average blood sugar chart, you can easily convert blood sugar to A1C and check whether you are prediabetic, diabetic, or not. 

Blood sugar level (mg/dL) A1C level
97 5%
126 6%
154 7%
183 8%
212 9%
240 10%
269 11%
298 12%
326 13%
355 14%

A1C Chart:

Below we have provided an a1c conversion chart for your assistance. With it, you can see A1C to glucose levels in your body and determine the estimated average glucose(EAG) in your blood. 

A1C chart

Advantages of A1C Over Other Forms of Glucose Assessment:

Let's take a look at the below-mentioned benefits of the A1C test:

  • One of the most vital benefits of AIC is that it is more accurate than other assessments
  • Measurable sugar over the past 2 to 3 months
  • It’s a great predictor of diabetes

How Does Our Glucose To A1C Calculator Work?

Our diabetes calculator lets you perform the A1C test with ease, just provide the required inputs and get the estimated A1C value in a matter of seconds. 

What Do You Need To Enter?

  • Average Blood Sugar or Hemoglobin A1C
  • Units

This is What You Will Get!

  • A1C Glucose Conversion: You can easily change the measuring parameters to hemoglobin or average blood sugar according to the need. Meanwhile, you can also use this blood sugar calculator to perform a1c glucose conversion.
  • Prediabetic, Diabetic, or Nondiabetic State: This a1c conversion calculator helps in determining whether you are prediabetic, diabetic, or nondiabetic. This estimation helps in creating a good diet and workout plan so that you can live a healthy life.


What Is My A1C If My Average Blood Sugar Is 140?

If the blood sugar is 140 mg/dl then it means that the hemoglobin A1C is 6.51 % which indicates that you are diabetic. Get the help of the blood sugar A1C calculator if you want to have instant results or you can check the glucose to A1C chart. 

What A1C % Is “Normal?”

If the value of the A1C percentage is lower than 5.7 then it's normal. 

How To Lower A1C?

Let's take a look at the following points to lower the A1C:

  • Maintain a normal body weight
  • Create a good diet plan with the help of a doctor
  • Check the sugar level regularly
  • Have proper medication


From the source of What is an A1C test?

From the source of A1C chart.

Online Calculator



Get the ease of calculating anything from the source of calculator online

© Copyrights 2024 by