Body mass index (BMI) is used as an inexpensive and easy-to-perform screening tool to identify possible weight problems that are associated with health. BMI is defined as the weight divided by the square of height.

Malaysia Body Mass Index Classification Standards

CLASSIFICATION	BMI(kg/m2)
Underweight	<18.5
Normal	18.5 - 22.9
Overweight and Obese	>23.0
Pre-Obese	23.0 - 27.4
Obese I	27.5 - 34.9
Obese II	35.0 - 39.9
Obese III	>40.0

[Adapted from Ministry of Health Malaysia 2004]



Reference:
Ministry of Health Malaysia (MOH), 2004. Clinical Practice Guidelines on Management of Obesity.