The BMI (Body Mass Index) calculator for children is a tool used to assess whether a child's weight is appropriate for their height, i.e., the ideal weight (BMI) for your child. This calculator uses BMI categories used for children aged 2 to 20 years. The calculator takes into account age, gender, height, and weight to calculate the child's BMI. The child's BMI is presented as a percentage (centile), and the percentage indicates how the child's weight compares to other children of the same age and gender.

BMI (Body Mass Index) for Children

cm

kg

(between 2 and 20 years)

Centile Range | Weight Status Category |
---|---|

Less than 5% | Underweight |

5% to 85% | Healthy weight |

85% to 95% | At risk of overweight |

Greater than or equal to 95% | Overweight |

Source:Centers for Disease Control and Prevention - National Center for Health Statistics | |

Last Reviewed Date: 07/06/2023 |

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The child's Body Mass Index (BMI) tells us whether their weight is appropriate for their height. Instead of using BMI categories used for adults, BMI for children is given as a percentile. Since children continue to grow until around age 20, their age and whether they are a boy or girl are also used to calculate the BMI percentile.

For children and adolescents aged 2 to 20, the BMI calculator takes into account age, gender, as well as height and weight.

The child's BMI is given as a "centile." The centile number indicates how the BMI compares with other children of the same age and gender as a percentage.

For example, a girl in the seventy-fifth (75th) percentile means she is heavier than 75% of other girls of the same age.

In this calculator, we used the BMI categories for children and adolescents aged 2 to 20, recommended by the __"Centers for Disease Control and Prevention (CDC)"__ of the United States National Public Health Agency, as mentioned in the previous table.

Growth percentiles charts from the Centers for Disease Control and Prevention (CDC):

These percentiles represent the child's BMI compared to American children who participated in national surveys from 1963-1965 to 1988-1994. We did not find BMI charts for children in Arab countries, so we relied on American data.