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Baby Growth Percentile Calculator

Enter your baby's measurements to see their growth percentiles based on WHO standards.

Based on WHO guidelinesData stays in your browser
6 months

Enter measurements to see percentiles

How Does the Growth Percentile Calculator Work?

This calculator uses WHO Child Growth Standards, based on data from healthy breastfed infants worldwide. Percentiles are calculated using the LMS method (Lambda-Mu-Sigma), which is the standard in pediatrics.

Why Should You Track Your Baby's Growth?

Regular growth tracking helps catch potential issues early — slow weight gain, excessive gain, or crossing percentile lines. Pediatricians rely on this data at every well-baby visit to assess overall health and nutrition.

Track Growth with ParAI

ParAI tracks your baby's growth with WHO percentile curves, automatic alerts when crossing lines, and AI trend analysis.

WHO percentile curvesWeight, height, headAI growth analysisGrowth alerts

Frequently Asked Questions

This tool provides general guidance and is not medical advice. Always consult your pediatrician.

Calculator vs. App

This calculator
ParAI App
Single point on chart
Full growth history
Manual entry
Log at every checkup
No alerts
AI alerts on percentile changes
Just percentile
AI trend analysis & advice
Free App

Track Your Baby's Growth with ParAI

ParAI logs weight, height, and head circumference, shows WHO percentile curves, and alerts you to changes. Plus feeding, sleep tracking, and AI insights.

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