Enter your child's age and length/height to see their percentile on the official WHO Child Growth Standards reference. Under 2 years uses recumbent length (lying down); 2 years and older uses standing height — this calculator switches automatically based on age, matching WHO's own convention. Calculated entirely in your browser — nothing is uploaded or stored.
Please enter a valid date of birth (child must be 0–5 years old) and length/height.
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⚠ Educational tool, not medical advice. This calculator uses the WHO Child Growth Standards (2006). A single reading outside the typical range is not a diagnosis — growth trend over multiple visits matters more than one measurement. Always discuss your child's growth with a qualified pediatrician.