how much should a 13 year old weigh
The amount that a 13 year old should weigh depends on their height. A 13 year old that is 5 feet should weigh 90-100 pounds.
How much a 13 year old should weigh depends on his or her body type, as well as height. For an estimate on how much a 13 year old should weigh, one should use the weight tool found at http://kidshealth.org/teen/food_fitness/dieting/weight_height.html#.