Blood Sugar Levels Chart: Understanding Normal Values in Australia

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In this article, we will discuss blood sugar levels and their significance in determining whether a person is diabetic, pre-diabetic, or falls into the normal range. We will provide a comprehensive blood sugar level chart that includes fasting and post-meal readings, as well as the values used in Australia. It is important to note that this article is for informational purposes only and should not be considered as a diagnostic tool. Consult with a healthcare professional for an accurate diagnosis and personalized advice.

Understanding Blood Sugar Levels

Blood sugar levels are an essential measure of how effectively the body is regulating glucose, which is the primary source of energy for cells. When the blood sugar level is too high or too low, it can have significant implications for overall health and well-being.

Normal Blood Sugar Levels

Let’s start with the normal range for fasting blood sugar levels. Typically, when measuring blood sugar levels upon waking up in the morning, a normal range falls between 70 and 100 milligrams per deciliter (mg/dL). It is essential to note that different countries may use different units of measurement. In Australia, blood sugar levels are measured in millimolar per liter (mmol/L), and the normal range is generally between 3.8 and 5.6 mmol/L.

Pre-Diabetic Range

If your fasting blood sugar level falls between 100 and 125 mg/dL or 5.6 and 6.9 mmol/L, it may indicate pre-diabetes. However, it is crucial to consider individual references and consult with a healthcare professional for an accurate assessment. Some references may suggest a pre-diabetic range of 110 to 125 mg/dL or 6.1 to 6.9 mmol/L.

Type 2 Diabetes

A diagnosis of type 2 diabetes is usually made when fasting blood sugar levels consistently measure 126 mg/dL (7 mmol/L) or higher. This indicates an impaired ability of the body to regulate blood sugar levels effectively. It is important to consult with a healthcare professional for proper diagnosis and management of type 2 diabetes.

Post-Meal Blood Sugar Levels

Apart from fasting blood sugar levels, it is also essential to monitor blood sugar levels after meals. This helps determine how effectively the body responds to food intake and regulates glucose levels.

Normal Range

For individuals without diabetes, blood sugar levels should ideally be below 140 mg/dL (7.8 mmol/L) two hours after a meal. This indicates that the body processes and absorbs glucose efficiently, maintaining stable blood sugar levels.

Pre-Diabetic Range

In the pre-diabetic category, post-meal blood sugar levels may range from 140 to 199 mg/dL (7.8 to 11 mmol/L). It is important to note that the specific range may vary slightly depending on references and recommendations.

Type 2 Diabetic Range

Individuals with type 2 diabetes often have post-meal blood sugar levels of 200 mg/dL (11.1 mmol/L) or higher two hours after eating. This highlights the impaired ability of the body to regulate blood sugar levels and manage glucose effectively.

The Importance of A1c Test

In addition to measuring fasting and post-meal blood sugar levels, healthcare professionals may also order an A1c test. This test provides an average of blood sugar levels over a period of approximately three months.

Normal A1c Levels

A normal A1c level is generally considered to be 6% or less. However, it is important to note that different organizations may have slight variations in their recommendations. Some may consider a level as low as 5.8% as normal. However, a range of 6% to 6.4% is generally classified as pre-diabetic, while a level of 6.5% or higher suggests type 2 diabetes.

When to Test Blood Sugar Levels

Knowing when to test blood sugar levels is crucial for accurate readings. Here are some key recommendations:

  1. Fasting Levels: It is recommended to measure fasting blood sugar levels first thing in the morning, before eating or drinking anything. This provides a baseline for assessing the body’s ability to regulate glucose levels.
  2. Post-Meal Levels: Measuring blood sugar levels two hours after a meal gives insights into how effectively the body processes and absorbs glucose. This timing allows for a proper evaluation of blood sugar control.
  3. Additional Testing: Those using insulin or experiencing illness may require more frequent blood sugar level monitoring. It is crucial to consult with a healthcare professional to determine the appropriate frequency for testing in such cases.


Understanding blood sugar levels is essential for managing diabetes and maintaining overall health. By monitoring fasting and post-meal blood sugar levels, as well as considering the results of an A1c test, individuals can work collaboratively with healthcare professionals to make informed decisions regarding their health. It is important to always consult with a healthcare professional for accurate diagnosis, personalized advice, and any concerns regarding blood sugar levels.

Thank you for reading this article. If you have any questions or comments, please feel free to ask in the comments section below. Remember, regularly communicating with your doctor or primary care provider is vital for managing your blood sugar levels effectively. If you found this article useful, consider subscribing to our channel for more informational videos.