Height for boys at 7 years
At 7 years, the median height for boys on the CDC 2000 growth charts is 121.8 cm (47.9 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 118.1 and 125.4 cm, a spread of 7.3 cm. The outer lines of the chart, the 3rd and 97th percentiles, sit at 111.7 and 132.0 cm.
Since 6 years, the median has risen by 6.4 cm over 1 year. By 8 years it reaches 127.9 cm.
For girls at 7 years the median is 121.5 cm, 0.3 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 7 years who measures 124.0 cm is at about the 66th percentile, meaning that out of 100 boys this age, about 66 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.
Percentiles at 7 years
Download CSV (all ages)| Percentile | z-score | Metric | Imperial |
|---|---|---|---|
| 3rd | −1.88 | 111.7 cm | 44.0 in |
| 5th | −1.64 | 113.0 cm | 44.5 in |
| 10th | −1.28 | 114.9 cm | 45.2 in |
| 25th | −0.67 | 118.1 cm | 46.5 in |
| 50th (median) | 0.00 | 121.8 cm | 47.9 in |
| 75th | +0.67 | 125.4 cm | 49.4 in |
| 90th | +1.28 | 128.7 cm | 50.7 in |
| 95th | +1.64 | 130.7 cm | 51.5 in |
| 97th | +1.88 | 132.0 cm | 52.0 in |
CDC 2000 charts draw the 3rd to the 97th percentile. Values computed with the LMS method from the published tables (retrieved 2026-10-05).