Average weight of a 14 year old

14 is a big age for boys and girls. I won't get into all the details, but we're talking about transitioning into high school and all sorts of things. The jump from 13 to 14 has on average one of the largest increases in terms of height and weight growth. While everyone is of course different and shouldn't unnecessarily be overly concerned if they're a late developer, statistically speaking around age 14 is when most people have their biggest growth spurts. These numbers are based on the CDC charts below.
  • Average weight of a 14 year old boy weighs in at roughly 112 pounds or 50.9 kilograms
  • Average weight of a 14 year old girl is roughly 109 pounds or about 49.5 kilograms
  • Average height for a 14 year old boy: 64.5inches or 163.5 cms. 64.5 inches equates to 5 feet and 4.5 inches or written another way 5'4.5"
  • Average height for a 14 year old girl: 63.25 inches or 161 centimeters. At age 14 the girls are slightly shorter for really the first time. A 14 year old girl is on average at 5 feet, 3.25 inches (5'3.25"). Basically, more than an inch shorter than most boys her age.
Again, this is a big turning point as far as when boys become larger than girls. Generally it sort of works like this, all the children are roughly the same size in elementary school regardless of gender. In middle school it's not on common for girls to be on average slightly taller (and even heavier) than boys. As children grow into teenagers and into high school the evolution continues and boys on average become larger and heavier as early as 8th or 9th grade. As most people can attest by the time senior year rolls around and men and women are 18 it's relatively uncommon for girls to be larger than boys and typically only happens in the extremes (especially tall girl compared to a boy who is below average height).

Take a look at the CDC charts below to get a general length for how the curve goes and you'll see that this is the age where girls, and especially boys shoot up before leveling off shortly after:
Click on either chart below to enlarge:

Height Weight Chart for 14 Year Old Girls
Chart with average weight of a 14 year old girl, plus graph of normal 14 year old female teenager height.
Height Weight Chart for 14 Year Old Boys
Normal height and weight chart for a 14 year old male chart & graph showing the height of an avg. 14 year old male teenager.