The Body Mass Index (BMI) is used to estimate the body fat percentage. It is defined as the individual's body weight divided by the square of his or her height.
BMI = Weight (Kg)/Height2 (Metres2)
Use the calculator on the top right to calculate your BMI!
This measurement is not very accurate as it doesn't consider the age or properties of special groups as body builders, elderly people, pregnant women, children, or people with physical disabilities. However it is a useful tool to estimate a healthy body weight (BMI between 20 and 25).
| Category | BMI range – kg/m2 |
|---|---|
| Severely underweight | less than 16.5 |
| Underweight | from 16.5 to 18.5 |
| Normal | from 18.5 to 25 |
| Overweight | from 25 to 30 |
| Obese Class I | from 30 to 35 |
| Obese Class II | from 35 to 40 |
| Obese Class III | over 40 |
* BMI Classification. World Health Organization.
Find out more about the Body Mass Index on the Better Health Channel Website, www.betterhealth.vic.gov.au.
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