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heightUnit:

weightUnit:

height (cm)

weight (kg)

How We Calculate

BMI for children is calculated using the same formula as adults, but interpretation depends on age and sex. It is compared to standardized growth charts to determine percentiles. BMI = weight (kg) / [height (m)]² Then compare to CDC or WHO BMI-for-age percentile charts for children.

Usage

Use this calculator to understand your child’s weight status based on BMI percentiles for their age and sex.

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Children's BMI Calculator – Check Your Child’s Body Mass Index