Height chart for 18-year-old boys
| Percentile | Height | Feet, inches | Inches |
|---|---|---|---|
| 5th | 164.2 cm | 5′4½″ | 64.6 in |
| 25th | 171.3 cm | 5′7½″ | 67.4 in |
| 50th (average) | 176.2 cm | 5′9½″ | 69.4 in |
| 75th | 181.0 cm | 5′11″ | 71.2 in |
| 95th | 187.8 cm | 6′2″ | 73.9 in |
CDC 2000 stature-for-age percentiles at exactly 18 years. A boy at the 50th percentile is taller than half of boys the same age.
Where growth stands at 18
Nearly all boys have finished growing; growth plates are closed or closing.
The average boy at 18 has reached 100% of the average adult man's height in the same charts (5′9½″). A boy who starts puberty late will be below average now and often catches up later; an early developer may be tall now and finish close to average.
Is my child's height normal?
Doctors look less at one measurement than at the pattern: a child who stays near the same percentile year after year is growing normally, whatever that percentile is. Talk to your doctor if your child drops across percentile lines, grows much slower than classmates, or is far below what both parents' heights predict.
Boys vs. girls at 18
The average 18-year-old girl is 163.1 cm (5′4″). See the full chart for girls.
