The situation is more complex in children, where the BMI threshold of obesity varies with age and sex. The charts below show how the BMI obesity threshold changes with age for boys and girls.

Use this calculator to determine whether a child is at a healthy weight for his/her height, age and sex. The BMI-percentile-for-age calculator automatically adjusts for differences in height, age and ...

It is a way of measuring how much body fat a person has i.e. whether a person is under- or over-weight. In children and adolescents, BMI changes with age and is different in males and females. Like ...