Can this calculator be used for children under age 2?

No, the CDC Child and Teen BMI Calculator is designed for children and teens aged 2 through 19 only.

Does the tool provide a diagnosis or medical advice?

No, the calculator reports BMI, percentile, and category but is not a substitute for professional medical advice; users should consult healthcare providers for interpretation.

How are the BMI results interpreted for children?

Results are interpreted using sex‑specific BMI‑for‑age percentiles based on CDC growth chart standards, which account for normal growth variations by age and sex.

Can the results be plotted on a growth chart for tracking over time?

Yes, the calculator plots the BMI percentile on a growth chart and explains the results, allowing for interpretation of growth patterns over time.

Body Metrics & FitnessTool Review

BMI Calculator for Kids

Provided byCenters for Disease Control and Prevention (CDC)cdc.gov

This free Child and Teen BMI Calculator is designed for boys and girls ages 2 through 19, which includes children up ...

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Screenshot of BMI Calculator for Kids on Centers for Disease Control and Prevention (CDC) — cdc.govOpen the live tool →

About this tool

What BMI Calculator for Kids does

The CDC Child and Teen BMI Calculator lets users determine a child's body mass index, BMI percentile, and weight category based on age, sex, height, and weight. It uses Centers for Disease Control growth chart standards to interpret results for children and teens aged 2 through 19. The tool also plots the BMI percentile on a growth chart and provides explanations of the results, positioning BMI as one potential health indicator among many factors.

Step by step

How to use the Centers for Disease Control and Prevention (CDC) BMI Calculator for Kids

1
Select the child's date of birth and sex at birth
2
Enter the child's height and weight
3
Submit the data to receive BMI, BMI percentile, and BMI category
4
Review the plotted growth chart and interpretation guidance

Is it right for you

Best for

Parents, caregivers, and educators seeking a free, government‑validated tool to assess a child's growth pattern and weight category using CDC standards.

Limitations

Results may vary slightly due to rounding differences
BMI is one health indicator and should be considered with other factors
Tool is designed for children ages 2 through 19 only

Questions

BMI Calculator for Kids FAQ

Can this calculator be used for children under age 2?: No, the CDC Child and Teen BMI Calculator is designed for children and teens aged 2 through 19 only.
Does the tool provide a diagnosis or medical advice?: No, the calculator reports BMI, percentile, and category but is not a substitute for professional medical advice; users should consult healthcare providers for interpretation.
How are the BMI results interpreted for children?: Results are interpreted using sex‑specific BMI‑for‑age percentiles based on CDC growth chart standards, which account for normal growth variations by age and sex.
Can the results be plotted on a growth chart for tracking over time?: Yes, the calculator plots the BMI percentile on a growth chart and explains the results, allowing for interpretation of growth patterns over time.

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