Why is child BMI different from adult BMI?
Growth, puberty, and age change expected BMI ranges, so pediatric interpretation needs a separate reference.
Child BMI calculator
For children and teens, BMI is compared with age- and sex-based reference ranges instead of adult thresholds alone.
Which standards does the calculator use?
WHO, CDC, and IOTF use different reference ranges and categories. The web MVP should let users choose.
What does the calculator show?
BMI, category, applied standard, healthy BMI range, and a concise explanation.
Calculate and assess BMI
Check the result in the browser or open the app on your platform for more convenient regular use.