Overview

The Children BMI Calculator computes BMI for children and teens ages 2-18, then evaluates it using age- and sex-specific percentile charts. Based on CDC growth charts, classifications are: underweight (< 5th percentile), healthy weight (5th-84th), overweight (85th-94th), and obese (≥ 95th percentile).

Formula

BMI = weight (kg) / height (m)² (same formula as adults) | Assessment: Compare against age-sex BMI percentile chart | Example: 10-year-old boy, 35 kg, 140 cm → BMI = 35 / 1.96 ≈ 17.86 → check percentile chart

How to Use

1. 1Select the child's sex.
2. 2Enter date of birth or age.
3. 3Enter weight (kg) and height (cm).
4. 4Click 'Calculate' to see BMI and percentile ranking.

Tips

• ✔Children's BMI must be interpreted using age- and sex-specific standards, not adult cutoffs.
• ✔BMI percentiles change with age, so check regularly as your child grows.
• ✔Consult a pediatrician for accurate assessment of your child's growth and nutrition status.
• ✔This calculator is for reference only and does not replace medical diagnosis.

FAQ