Head Circumference Calculator
Determine your baby's head growth percentile to track healthy brain development.
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Calculation Results
Baby's Head Circumference Analysis
99th Percentile
Head circumference tracks healthy brain and skull development. Consistent growth along the percentile is highly reassuring.
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Metrics Analysis
How This Calculator Works
Maps height, weight, and head measurements against WHO (0-2 years) tables using LMS normal distribution statistics.
Baby Growth Percentile Calculator — WHO Reference Tracker
Assess your infant's physical measurements against global WHO growth benchmarks.
WHO vs. CDC Growth Standards
The WHO standards track optimal growth under healthy breastfed environments, which is the international standard for children up to 2 years. The CDC charts are typical reference standards for older kids.
Growth Consistency
Pediatricians look for steady growth along your baby's chosen percentile line rather than high rankings, ensuring consistent nutritional intake.
Clinical Standard Reference Guideline:
WHO Child Growth Standards, Geneva.
Frequently Asked Questions (FAQ)
Q:What do growth percentiles mean?
If your baby is in the 70th percentile for weight, it means they weigh more than 70% of babies of the same age and sex, and less than 30%.
Q:When should I worry about percentiles?
Concern typically arises if there is a sudden drop across two major percentile curves (e.g. from 75th down to 15th) or if measurements are near the extremes (below 3rd or above 97th).