Child Growth Percentile Calculator
Estimate your child's height and weight percentile based on CDC growth data for ages 2–18. Percentile indicates the percentage of children of the same age and sex who are shorter/lighter.
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Growth Percentiles (Estimated)
Based on CDC 2000 growth reference data. Percentiles are approximated using a polynomial fit to CDC median and SD tables. For clinical assessment, consult a pediatrician.
References & Methodology
- U.S. Department of Agriculture (USDA), "Expenditures on Children by Families (Cost of Raising a Child)," 2017. — Average annual cost of raising a child from birth to age 17 by income bracket and region.
- College Board, "Trends in College Pricing and Student Aid," 2023. — Average tuition, fees, and room-and-board costs for public and private institutions.
- U.S. Department of Health and Human Services (HHS), "Child Care and Development Fund," acf.hhs.gov. — National and state childcare cost data and subsidy eligibility thresholds.
- Social Security Administration (SSA), "Retirement Benefits Estimator," ssa.gov. — Life expectancy tables and retirement benefit calculation methodology.
Understanding Growth Percentiles
A percentile tells you how a child compares to others of the same age and sex. A child at the 50th percentile for height is taller than 50% of children the same age. Percentiles between the 5th and 95th are generally considered within the normal range. A single measurement is less informative than a trend over time — consistent growth along any percentile curve is healthy.