How tall should 12 year old boy be?

For a 12-year-old boy, the average and expected height ranges are as follows:

Average Height

• At the 50th percentile, the average height for a 12-year-old boy is approximately 58.7 inches (149 cm)25.

Height Range

• The height range for 12-year-old boys typically falls between 54 to 63.5 inches (137 cm to 161 cm)5.
• Another source specifies the range as being between 137 cm to 160 cm (4-1/2 to 5-1/4 feet)3.

These measurements are based on growth charts developed by the CDC and are used by pediatricians to monitor a child's growth.