BMI formula

Body Mass Index (BMI) = weight (lb) * 703 / height (inch) /height (inch) 

                        (e.g.   153 (lb) * 703 / 68 / 68 = 23.26 )

 

or

 

BMI = weight (kg) / height (meter) / height (meter)

     (e.g.   69 (kg) /1.73 / 1.73 = 23.05 )

 

At the same BMI, women tend to have more body fat than men.

At the same BMI, older people, on average, tend to have more body fat than younger adults.

Highly trained athletes may have a high BMI because of increased muscularity rather than increased body fatness.

 

 

Japanese definition

Normal:18.5 - 22.9

Overweight: 23 - 24.9

Obese: 25 and above

 

Singapore definition

Normal:18.5 - 22.9

Overweight: 23 - 27.5

Obese: 27.6 and above