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Children BMI Calculator

Calculate BMI percentile for children and teens aged 2-20.

Recommended for ages 2–20 years.

Unit system

Age

years

Sex

MaleFemale

Age and sex are collected to remind that interpretation depends on them; they are not used in the BMI calculation.

Height

Weight

About this calculator

Body Mass Index (BMI) is weight divided by height squared. In children and teens, BMI is compared to peers of the same age and sex to obtain a percentile. Use this calculator to compute BMI; then refer to CDC/WHO growth charts to interpret the result.