Pediatric BMI Calculator
Compute BMI-for-age screening value; percentiles require growth charts.
Use the calculator below, then review the formula, a numeric example, and the reference table to understand how the pediatric bmi calculator result is produced.
Educational tool only. It does not replace advice from a licensed clinician, dietitian, or exercise physiologist.
Calculator inputs
Result
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What is this calculator?
Compute BMI-for-age screening value; percentiles require growth charts. The formula, a worked example, and a reference table are below. Results are for education only, not medical advice.
How it works
BMI = weight (kg) ÷ height (m)² (same as adults numerically). Percentiles require CDC/WHO growth charts by age and sex.
Example
Child 140 cm, 35 kg → BMI = 35 ÷ 1.4² ≈ 17.9 (percentile not computed on this page).
Reference Table
| Value | Meaning |
|---|---|
| Compute BMI | Use metric consistently |
| Plot percentile | Use official growth chart |
| Follow-up | Pediatric clinician for trends |
FAQ
Where is the percentile?
This tool shows the BMI number only; charting is separate.
Teens?
Puberty timing shifts norms; professional interpretation is key.
Underweight concerns?
Discuss growth velocity and nutrition with a pediatric team.
Sports kids?
Muscle can raise BMI without excess fat.