BMI Calculator For Kids India
Calculate BMI-for-age percentile for children using WHO and IAP growth charts. Healthy weight ranges by age and gender.
Disclaimer: Results are general estimates and do not constitute medical advice. Consult a qualified doctor or dietitian for personalised health guidance.
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About BMI Calculator for Children India
Calculate BMI percentile for children aged 2-18 using WHO Child Growth Standards and Indian Academy of Pediatrics (IAP) 2015 growth charts. Shows underweight, normal, overweight, and obese classification with age-gender-specific percentile.
BMI interpretation for children and teens works completely differently from adults — rather than fixed cutoffs, a child's BMI is plotted against age- and sex-specific percentile growth charts, because a “normal“ BMI value changes substantially as children grow, and the same BMI number can mean something entirely different at age 5 versus age 15. This tool uses WHO Child Growth Standards alongside guidance referenced by the Indian Academy of Pediatrics, calculating where a child's BMI falls on the percentile curve for their exact age and sex rather than applying a flat adult-style cutoff, which would be clinically inappropriate and misleading for a growing child.
How to use
- Enter your details in the input fields — results update live as you type, with no need to submit a form.
- Read the reference ranges shown alongside your result, since a single number is only useful in context.
- This tool gives an estimate for informational purposes only — it does not replace advice from a doctor or qualified professional.
- Use the related tools below if you want to check a connected metric as part of a fuller picture.
- All calculations run in your browser only; none of your health data is transmitted or stored anywhere.
Tool details
⚡ Next step — complete your workflow
Expert note — India 2026
IAP 2015 growth charts use Indian-specific data. A child is classified as overweight at BMI >85th percentile and obese at >95th percentile — different from adult cutoffs.
Frequently asked questions
Is adult BMI formula same for children?
Same formula (kg/m²) but interpretation is age and sex-specific for children — using percentile charts, not fixed cutoffs. A BMI of 18 might be obese for a 6-year-old but underweight for a 15-year-old.
Healthy BMI percentile for children?
Between 5th and 85th percentile. Below 5th = underweight. 85th-95th = overweight. Above 95th = obese.
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