Pediatrics

WHO / CDC Pediatric Growth Percentiles & Z-Score Calculator

Calculates Weight-for-Age, Height-for-Age, and BMI Z-scores and percentiles for infants and children.

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Parameters

WHO / CDC Pediatric Growth Percentiles & Z-Score Calculator Result

Formula

Z-score = (Measured Value - Median M) / Standard Deviation S
Percentile = Φ(Z-score) × 100%
WHO Standards (< 24 months) | CDC Charts (2 to 20 years)

Clinical Pearls

Universal pediatric metric tracking longitudinal developmental trajectories and detecting early growth failure, endocrine short stature, and pediatric metabolic risk.

Limitations

In preterm infants (< 37 weeks gestation), use corrected gestational age up to 24 months to avoid false diagnoses of growth failure.