The average height for a 12 year old would be 5"6-5'8 because I was this height when I turned 12. The average height for a 13 year old would be 5"10-5"13

The average height of a 13 year old girl is 5 ft 1 in and the average weight is 101 lbs. For a boy of the same age, the average height is 5 ft 1 in and the average weight is 100 lbs.

The average height of a 13 year old girl is 5 feet-5'3 feet. While the average weight 95 pounds-105 pounds. Remember this is just average and everyone is different.

Well, I am actually "6.1" and I turned 13 this year in April but for most 13 year olds the average height about "4.6" to "5.7" so I hope that answers your question...

The average height of a 13 year old girl is around 5'2'' tall. This can vary a bit, especially if she has tall parents or genetics that help her become taller or shorter.

The average height of a 13 year old boy is around 5 feet and 1 3/4 inches, in the case of a girl, the average height is 5' feet 1 3/4 inches. There may be variations because each case is different.