Calculator Online

Home AI Chat AI Math Solver

NEW

Tools ▾ Category ▾

Pricing Sign In

Calculator Online

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.

To Calculate:

The A1C value is normal which means that your sugar level is also normal. If you have any doubts then consult with the doctor because this is just an estimation.:

% ▾

Related

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

This tool is designed to help you understand blood sugar control and the relationship between A1C and EAG (Estimated Average Glucose).

Understanding What Does A1C Measure?

The A1C test measures the amount of sugar attached to hemoglobin. Hemoglobin is a protein found in red blood cells that carries oxygen throughout the body.

When glucose enters the bloodstream, it binds to hemoglobin. The higher your blood sugar levels, the more glucose attaches to hemoglobin.

Since red blood cells live for about 2 to 3 months, the A1C test reflects the average blood sugar level over this period.

The A1C test helps determine whether your blood sugar levels are normal, prediabetic, or diabetic.

How To Calculate A1C Percentage?

The hemoglobin A1C test is a reliable way to evaluate long-term glucose control. It indicates whether diabetes is well managed or not.

It is generally recommended to take the test every three months. You can use the following formulas to convert between A1C and average blood glucose values.

Glucose in mg/dL:

To convert A1C percentage to estimated average glucose:

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

Glucose in mmol/L:

To convert A1C percentage to mmol/mol:

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

Converting mmol/mol to percent:

To convert HbA1c from mmol/mol back to percent:

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

Blood Glucose to A1C

The table below shows estimated relationships between blood sugar levels (mg/dL) and A1C percentages.

Use this chart to quickly estimate whether your levels fall within the normal, prediabetic, or diabetic range.

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:

The A1C conversion chart helps you compare A1C percentages with estimated average glucose (EAG) levels. It provides a simple way to interpret lab results and understand your long-term blood sugar control.

A1C chart

Advantages of A1C Over Other Forms of Glucose Assessment:

Here are some key benefits of the A1C test:

Provides a more accurate long-term picture compared to daily glucose tests
Reflects average blood sugar levels over 2 to 3 months
Helps predict the risk of diabetes-related complications
Does not require fasting

How Does Our Glucose To A1C Calculator Work?

Our A1C calculator allows you to convert between average blood sugar and A1C values quickly and accurately. Simply enter the required value and select the appropriate unit to get instant results.

What Do You Need To Enter?

Average Blood Sugar or Hemoglobin A1C value
Measurement Units (mg/dL, mmol/L, or %)

This is What You Will Get!

A1C and Glucose Conversion: Quick conversion between A1C percentage and estimated average glucose (EAG).
Health Status Estimation: Helps determine whether your blood sugar levels are normal, prediabetic, or diabetic.