Australian Government - Department of Health
Australian Government - Department of Health - Healthy Weight

Your Weight

Calculate your (for adults only) Body Mass Index (BMI)

Height: m (example - 1.75m)

Weight: kg

Your BMI:

Classification of Body Mass Index


BMI (kg/m2)

Risk of co-morbidities
(Health Consequences)

Underweight <18.50 Low (but possibly increased risk of other clinical problems)
Normal range
(Healthy Weight)
18.50 - 24.99 Average
Overweight: >25.00
Pre-obese 25.00 - 29.99 Increased
Obese class 1 30.00 - 34.99 Moderate
Obese class 2 35.00 - 39.99 Severe
Obese class 3 >40.00 Very severe

Reproduced from: Obesity: Preventing and Managing the Global Epidemic, 2000, WHO, Geneva.

For more information please go to the Healthy weight page