The BMI calculator for kids computes child BMI from age (2–17), sex, height, and weight with a simplified screening note—not clinical growth-chart percentiles.
How to use
- Enter age, sex, height (cm), weight (kg).
- Read BMI and the note.
- Adults: BMI calculator; calorie planning for children needs clinician guidance.
Interpretation
Pediatric weight status depends on growth velocity and exams—this is a rough screen only.
More tools on the health hub. For planning reference only—not medical, nutrition, or obstetric advice.
Frequently asked questions
How is child BMI calculated?
Same formula: kg ÷ m². Interpretation needs age/sex growth charts—this page shows a simplified note, not official percentiles.
What ages are supported?
Ages 2–17. Under 2 or 18+ → adult BMI calculator or clinic reports.
Screen shows over or under?
One BMI value is not a diagnosis. Review growth velocity with a pediatrician; genetic height range: child height predictor.
Same thresholds as adults?
No—adults use fixed BMI bands; children need age-specific charts. Do not compare child results to adult cutoffs.
Is this medical advice?
No—results are for planning reference only. See clinicians for pregnancy, pediatrics, cycle disorders, or sleep conditions. Do not rely on calendar math alone for contraception.