Health & Fitness
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Calculate height, weight, BMI, and head circumference percentiles.
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
Which chart should I use?
WHO charts for 0-2 years, CDC charts for 2-20 years. Both are valid.
Is 50th percentile ideal?
Any percentile can be healthy. Consistent growth along their curve matters most.
When to be concerned?
Sudden percentile changes (crossing 2+ lines) or extremes (<3rd or >97th) warrant discussion with pediatrician.
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About this tool
This Child Growth Percentile Calculator turns your inputs into practical results. Provide Age (months), Gender, and Height to calculate Height Percentile and Weight Percentile.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.