BMI Calculator for Kids

Use this bmi calculator for kids to check growth in minutes. Enter age and gender. Add height and weight. You will see body mass index with a percentile and a weight group. Data come from Centers for Disease Control and Prevention growth charts.

Why This Tool Works

It uses body mass index for age for ages two through nineteen. It compares your child with peers of the same age and gender. You can switch between metric and imperial units. Many sites offer similar tools. This one focuses on clear steps and plain language.

Simple and Fun

Type a few numbers then select Calculate BMI. You will see results right away. Parents like the straight talk and clear summary.

How to Use This Tool

Step 1: Enter the Data

Set the unit system then fill each field.

• Unit system: Choose Metric or Imperial. Metric uses kilograms and centimeters. Imperial uses pounds, feet and inches.
• Age: Enter age in years from two to nineteen.
• Gender: Choose boy or girl to match growth charts.
• Height: In metric, enter fifty to two hundred twenty centimeters. In imperial, enter feet and inches. Inches may be zero.
• Weight: In metric, enter ten to two hundred kilograms. In imperial, enter twenty to four hundred pounds.
• Tip: Use fresh measurements for the best read.

Step 2: Calculate the BMI

Select Calculate BMI to see the result. The tool converts units when you choose imperial. It computes body mass index with the standard formula. It compares the result with Centers for Disease Control and Prevention growth charts. You will see the percentile and the weight group.

A Few More Details

Here is what the result means.

• BMI: The tool shows a number rounded to one decimal.
• BMI Percentile: It shows where your child stands among peers.
• Explanation line: You will see how many children your child exceeds.
• Percentile guide:

• Less than fifth percentile: Underweight
• Fifth to eighty fourth percentile: Healthy weight
• Eighty fifth to ninety fourth percentile: Overweight
• Ninety fifth percentile or higher: Obese

BMI for children is age and gender specific. Please talk with your child’s clinician for a full review.

Keep these points in mind.

• Ages two through nineteen are supported.
• Boy and girl labels match official growth charts.
• Enter values within the stated ranges.
• Decimals work for height and weight.
• Measure height barefoot and stand tall.
• Muscle and body build can shift the number.
• The percentile uses chart points and estimates values between them.

Final Thoughts

This bmi calculator for kids aims to keep the process simple and clear. Many tools offer the same feature, choose the one that fits your routine.

• Track growth between routine visits.
• Add numbers to a school or sports form.
• Check a change after a growth spurt.
• Compare metric and imperial numbers.
• Prepare for a pediatric visit with ready figures.

Try it and save the result for your records.