Height for boys at 3 years

At 3 years, the median height for boys on the CDC 2000 growth charts is 95.0 cm (37.4 in): half of boys this age measure less and half more. The middle half of boys, from the 25th to the 75th percentile, falls between 92.4 and 97.6 cm, a spread of 5.2 cm. The outer lines of the chart, the 3rd and 97th percentiles, sit at 88.1 and 102.6 cm.

Since 2 years, the median has risen by 8.5 cm over 1 year. By 4 years it reaches 102.2 cm.

For girls at 3 years the median is 93.9 cm, 1.0 cm less than for boys, which is why the charts are drawn separately by sex.

From 2 years CDC recommends its own 2000 growth charts, which draw the 3rd to the 97th percentile; under 2, the WHO charts draw the 2nd to the 98th.

Reading the table: a boy at 3 years who measures 96.5 cm is at about the 65th percentile, meaning that out of 100 boys this age, about 65 measure less. From 2 years this is height measured standing. If a child of 2 or older was measured lying down, CDC subtracts 0.8 cm before comparing.