How BMI is calculated
BMI is your weight in kilograms divided by your height in metres, squared. Someone who weighs 65 kg and is 1.63 m (5 ft 4 in) tall has a BMI of 65 ÷ (1.63 × 1.63), which is 24.5.
The same formula applies to men and women. It isn't meant for children, teenagers or pregnant women, who need age- or stage-specific charts.






