Body Mass Index Calculator for Children. Is your child obese? Is he/she at risk of developing obesity later on? To know, try our child's body mass index (BMI) calculator which calculates not only your child's body mass index.
Interpretation of the results
BMI
BMI percentiles
Interpretation
< 18.5
< 5th
Underweight
18.5 to 24.9
5th to 85th
Normal
25 to 29.9
85th to <95th
Overweight
30 or more
> 95th
Obese
Note: it is much more useful to do frequent measurements e.g. every month, to see if your child is crossing percentiles for example, if a child's body mass index percentile is now at the 10th percentileand at the 60th after 1 month , the child's weight may be abnormal althaugh both values are within normal range.
