Standard weight is not based strictly on age; an ideal weight takes height into consideration as well. According to Disabled World, the average 14-year-old girl, who is about 5 feet and 4 inches tall, weighs between 105 and 125 pounds.
Sometimes appearance can make a teen seem overweight when it is not the case. Disabled World explains that appearance can change with weight, height, bone composition and body-fat distribution. Adolescent girls go through major body changes around this age. Since teenagers can very quickly hit a growth spurt and outgrow baby fat, dieting is not advised. Healthy eating habits and regular daily exercise are beneficial at any age.