Are you a healthy weight?

The body mass index (BMI) is a great way to establish whether or not you're in a healthy weight range and is based on height and weight. The BMI is a useful measurement for most people over 18 years, however, there are some limitations to be aware of as it may be influenced by age, gender and ethnicity.


Calculate your BMI now



What is body mass index (BMI)?

The body mass index (BMI) is a great way to establish whether or not you're in a healthy weight range and is based on height and weight. The BMI is a useful measurement for most people over 18 years, however, there are some limitations to be aware of as it may be influenced by age, gender and ethnicity.

What the Results Mean

Based on your BMI calculation, you can determine your classification based on the chart below.

Body Mass Index (kg/m2)Classification
Below 18.50=Underweight
18.50 to 24.99=Normal/healthy weight range
25.00-29.99=Overweight
30 and above=Obese Class 1 (30.00 – 34.99)
Obese Class 2 (35.00-39.99)
Obese Class 3 (4.00 and over)
40 and above=extremely overweight / high risk for health complications

Source: Adapted from World Health Organization (WHO) 1995, WHO, 2000 and WHO 2004.


BMI Calculator

Exceptions to the rule

  • Muscles: BMI cannot distinguish between fat and muscle. Those with a higher than average muscle mass (body builders, athletes etc.) will end up with a misleadingly high BMI value.
  • Certain populations: BMI is also unsuitable for certain populations and individuals, including Aboriginal people, Torres Strait Islanders, Asian people, children, pregnant women and the elderly.

For all these reasons, you should treat it as a rough guide to be used in conjunction with other body-weight indicators.

Waist circumference

Measuring your waist circumference is a great predictor of health risk for chronic diseases. No matter what your height or build, an increased waist line can be a sign that you are at increased risk for serious health problems.

Classifications*:

  • Male: > 94cm = increased risk; > 102cm = substantially increased risk
  • Female: > 80cm = increased risk; > 88cm = substantially increased risk

Content on this site is provided for general information only, and should not be treated as a substitute for the medical advice of your own doctor or any other health care professional. Always consult your own GP if you're in any way concerned about your health.

* Australian Government Measure Up Campaign 2010

Note:
This calculation is a guideline only as it does not take into consideration fat to muscle ratio, which affects BMI results. Therefore, it may not be appropriate for athletes or those of muscular build.

Content on this site is provided for general information only, and should not be treated as a substitute for the medical advice of your own doctor or any other health care professional. Always consult your own GP if you're in any way concerned about your health.


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en-AU | 30/10/2014 4:34:49 PM | USCOSPRODIIS3