BMI Calculator for Kids

Child Body Mass Index Calculator is a tool that calculates Child Body Mass Index based on the child's age, gender, height and weight.

BMI Calculator for Kids Would you like to add the tool to your own website?
Add Your Site
Share
Report Error

BMI Calculator for Kids is a practical tool for evaluating a child’s body weight in relation to their height, helping parents and caregivers monitor healthy growth and development.

What Does BMI Calculator for Kids Do?

The BMI Calculator for Kids calculates the Body Mass Index (BMI) to assess if a child is underweight, healthy weight, overweight, or obese based on their age, height, and weight. It provides insights into a child’s overall health and helps in early identification of potential issues.

BMI Calculator for Kids Formula

The formula for calculating BMI is:

BMI = Weight (kg) ÷ (Height (m) × Height (m))

For children, the BMI is then compared to percentile charts based on age and gender to determine the weight category.

BMI Calculator for Kids Examples

Example 1: Healthy Weight

  • Age: 8 years
  • Weight: 25 kg
  • Height: 1.2 meters

Step 1: Calculate BMI:

BMI = 25 ÷ (1.2 × 1.2) = 25 ÷ 1.44 ≈ 17.36

Step 2: Interpret the result:
Using the BMI percentile chart for an 8-year-old, a BMI of 17.36 falls in the healthy weight range.

Result: The child has a healthy BMI.

Example 2: Overweight

  • Age: 12 years
  • Weight: 50 kg
  • Height: 1.4 meters

Step 1: Calculate BMI:

BMI = 50 ÷ (1.4 × 1.4) = 50 ÷ 1.96 ≈ 25.51

Step 2: Interpret the result:
Referring to the BMI percentile chart for a 12-year-old, a BMI of 25.51 places the child in the overweight category.

Result: The child’s BMI indicates they are overweight.

Use the Body Mass Index Formula

To calculate Child BMI, use the following general formula:

Child BMI = Weight / (Height / 100) * (Height / 100)

BMI (BKİ)BMI PercentileCategory
< 18.5< 5thUnderweight
18.5–24.95th–85thNormal weight
25–29.985th–<95thOverweight
≥ 30≥ 95thObese
Childs BMI table

BMI Calculator for Kids is an essential tool for tracking children’s growth patterns and ensuring they stay on the path to a healthy and active lifestyle.

Note: Calculator Robot made several updates to the Included in the Health category, BMI Calculator for Kids tool. Newly added data increased calculation accuracy. If you're looking for a new calculation solution, Daily Protein Calculator tool offers a different approach. Check it out now.
  • pinterest
  • whatsapp
  • faacebook