CDC Weight for Age Percentiles for Boys (2-20 years)

Z Score  
Decimal Precision:
ZScore = ((Weight/M)L - 1) / (L * S)
  • Weight percentiles are best interpreted with reference to height (see calculators for weight for heigth and BMI percentiles.)
  1. Percentile conversion from Z-Score is done by table look-up in the standard Normal Table. Percentiles are provided for Z Scores between -3.09 and 3.09. Values beyond these extremes return percentiles of 0.1 and 99.9 respectively.
  2. LMS Parameters for Boys: Weight for Age. National health and nutrition survey (NHANES), CDC/National Center for Health Statistics.
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