How to calculate Body Mass Index

Body Mass Index is a simple calculation using a person’s height and weight.

The formula is BMI = kg/m2 where kg is a person’s weight in kilograms and m2 is their height in metres squared.

A BMI of 25.0 or more is overweight, while the healthy range is 18.5 to 24.9.

BMI applies to most adults 18-65 years.


Check your body stats to find your ideal weight, because overweight and obesity are risk factors for diseases such as hypertension, heart disease and diabetes. It can also be used to find your healthy weight if you want to lose weight or are on diet.