Can this calculator be used for children under age 2?

No, the BMI Calculator for Kids is designed for children and teenagers aged 2 to 17. For infants and toddlers under 2, pediatricians typically use weight-for-length growth charts instead.

Does the tool provide a diagnosis or medical advice?

No, the calculator provides BMI values and weight status categories based on CDC growth charts. It is an screening tool only and should not replace professional medical evaluation or diagnosis.

Can I use this calculator for both boys and girls?

Yes, the tool accommodates both Male and Female genders and provides age- and gender-specific percentile rankings based on CDC reference data.

What do the BMI percentile results mean?

The calculator provides a BMI value along with a weight status category (underweight, normal weight, overweight, or obesity) and corresponding percentile rank compared to same-age and same-gender peers, indicating where the child falls in the growth reference distribution.

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BMI Calculator for Kids

Provided byCalculator.netcalculator.net

This free BMI calculator accepts child ages (starting at age 2) and sex, so it works for young kids including boys an...

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About this tool

What BMI Calculator for Kids does

This free BMI calculator accepts child ages starting at age 2 and sex, so it works for young kids including boys and girls up to age 9. It provides BMI output and includes child/teen percentile reference guidance based on CDC categories. No paid plan is required to use the calculator. The site offers both US and metric unit options, along with additional outputs like BMI Prime and Ponderal Index, and includes explanatory text about BMI categories and limitations before the calculation begins.

Step by step

How to use the Calculator.net BMI Calculator for Kids

1
Select the child's age range (2 to 120) and gender (Male or Female)
2
Enter height using feet/inches or centimeters and weight using pounds or kilograms
3
Click the calculate button to receive BMI value, weight status category, and percentile reference
4
Review the result display which shows BMI, healthy weight range for the height, BMI Prime, and Ponderal Index

Is it right for you

Best for

Parents and caregivers seeking a free, age-specific BMI assessment for children aged 2 through 17 that provides percentile rankings and weight status categories without requiring registration or payment.

Limitations

Results are based on CDC percentile growth charts and may not replace clinical assessment
Tool provides estimates rather than medical diagnosis
Interface includes advertisements on the page

Questions

BMI Calculator for Kids FAQ

Can this calculator be used for children under age 2?: No, the BMI Calculator for Kids is designed for children and teenagers aged 2 to 17. For infants and toddlers under 2, pediatricians typically use weight-for-length growth charts instead.
Does the tool provide a diagnosis or medical advice?: No, the calculator provides BMI values and weight status categories based on CDC growth charts. It is an screening tool only and should not replace professional medical evaluation or diagnosis.
Can I use this calculator for both boys and girls?: Yes, the tool accommodates both Male and Female genders and provides age- and gender-specific percentile rankings based on CDC reference data.
What do the BMI percentile results mean?: The calculator provides a BMI value along with a weight status category (underweight, normal weight, overweight, or obesity) and corresponding percentile rank compared to same-age and same-gender peers, indicating where the child falls in the growth reference distribution.

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