Most health care providers track growth using standardized charts from the U.S. National Center for Health Statistics. Lines on the charts represent the average growth rates of large groups of U.S. children. When your child's height and weight are recorded on these charts over time, his or her growth can be compared with the average growth of other children.
You are likely to hear your child's height and weight described in terms of percentiles. This indicates what percentage of children the same age are likely to be smaller (or larger) than your child. Percentiles are shown with thick curved lines on the charts; the thickest line is the 50th percentile—meaning that half of all children will be above the line and half will be below.
Use the form below to compare your child's height to the height of other children the same age. You can also print the results and take them to your child's next doctor's visit.