Assessment of obesity
Children Aged 2 to 18 Years
The Body Mass Index (BMI) for children is calculated in the same way as you would calculate the BMI for adults. The BMI can be calculated using an online calculator.
However, the BMI is interpreted in a different way for children and needs to be transferred to a paediatric BMI chart to determine whether the BMI is healthy for the child’s age.
Childrens Aged 0 to 2 Years
The BMI cannot be calculated for young infants. The difference between weight and length centiles can be used to determine whether their weight is healthy for their length. If the centile for weight is more than 2 centiles higher than the centile for length, this indicates that the infant is overweight.