What is the average weight and height of a 12 year old girl?

I am sure you don't want me t osay not to worry and it depends on muscle and height, so i won't

A healthy weight is maybe 85 to 120, and if you are under, don't worry, i wish i was! If you are over, WHO CARES! Most people who are more have more bones and muscle.

Height is about 5 feet. 4 to 6 feet is probably what i see most.

Hope i help! I am 12, weigh 98 to 103 (the scale changes for me all day!) and am about 4'11''. I am good enough.

Hope this was an okay answer!