Average height by age
The median height of boys and girls at every birthday from 2 to 18, from the CDC growth charts — the same L, M and S values a pediatrician’s chart is drawn from. Pick an age for the full 3rd-to-97th percentile chart and what’s typical that year.
Median height at each age
50th percentile, at each exact birthday. Tap an age for its full chart.
How to read a percentile
A percentile compares a child with others of the same age and sex on the CDC 2000 growth charts — the same L, M and S values a pediatrician’s chart is drawn from, and where every number on this page comes from. The 50th percentile is the median: half of children that age are shorter and half are taller. The 5th and 95th bracket the middle 90%.
Pediatricians care less about the number than the line. A child who stays near the same percentile year after year is growing normally, whatever that percentile is — a steady 15th is healthier than a 60th that has just dropped from the 90th. Crossing two of the major lines, or sitting below the 3rd, is the usual cue to have a pediatrician take a look. None of this is medical advice.
How tall will you be?
Today’s height is one input. The calculator combines it with your parents’ heights and puberty timing to give the range your adult height will most likely land in — free, no account.
Try the height calculatorSource: CDC 2000 growth charts, stature-for-age LMS parameters (statage.csv). MaxHeight is not affiliated with or endorsed by the CDC.