Child BMI Calculator

Calculate BMI percentile for children and teens aged 2–19 using CDC growth chart standards.

About Child BMI Percentile

Child BMI is age- and sex-specific because body fatness changes substantially with age. The CDC uses BMI-for-age percentile charts to classify weight status in children aged 2–19. Percentile indicates how a child's BMI compares to peers of the same age and sex.

CDC BMI-for-Age Categories

PercentileCategory
Below 5thUnderweight (<5th %ile)
5th – 84thHealthy Weight (5th–84th %ile)
85th – 94thOverweight (85th–94th %ile)
95th and aboveObese (≥95th %ile)
This calculator is for educational purposes only. Consult a qualified healthcare professional for medical advice.