Developmental concerns: observations, screening, and help
Bring specific concerns to a clinician; a milestone checklist is not a diagnosis.
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Child growth percentile calculator
Compare weight and length or height using WHO/CDC or China’s own reference tables.
Source-linked preview · Independent clinical and translation review pending.
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Your result
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THE LITTLE DETAILS
Made for your everyday.
US: WHO before 24 months, CDC from 24 months. China: WS/T 423–2022. Under two, measure lying-down length; from two, standing height. Percentiles describe reference position, not developmental achievement or a pass/fail result. View repeated measurements with a clinician. China results are percentile bands from the published age rows; no invented LMS parameters.
CDC / WHO ↗CDC · 2–20 years ↗中国 WS/T 423—2022 ↗Sources checked November 8, 2026. Source links do not imply endorsement.
Three small steps
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How should I interpret this result?
US: WHO before 24 months, CDC from 24 months. China: WS/T 423–2022. Under two, measure lying-down length; from two, standing height. Percentiles describe reference position, not developmental achievement or a pass/fail result. View repeated measurements with a clinician. China results are percentile bands from the published age rows; no invented LMS parameters.