BMI Calculator for Kids

For children and teens, a high Body Mass Index can lead to weight-related diseases, while being underweight can also put a child at risk of health issues.Unlike adults, in children and teens BMI is age- and gender-specific. After the BMI is calculated, it is expressed in relation to a percentile a child fits into according to their age group and gender. Find out if your child is in a healthy BMI range using the calculator below.

Calculate Kids Body Mass Index

    Your body mass index:
    Percentile:
    Your body mass index:
    Percentile:

    Note: Results of the BMI calculator are based on averages. Keep in mind that the BMI calculator may over-estimate body fat in those with a muscular build. A BMI calculator is designed to assess your relative fitness but it is NOT a calculation of body fat percentage.

    Got Your Calculated Body Mass Index?

    Knowledge is power! Now that you know your child’s BMI range, check out articles to help you understand body fat and how to get your kids active.

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