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 ...

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.

For children aged 2 and over ... 6 There are two ways to check your BMI: Use our BMI calculators Use the BMI chart. First, find your height in the left-hand column. Then, follow it over until ...