While there can be an "average" weight (which, nowadays, may even be overweight), there is no ideal or perfect weight for a 12-year-old boy or girl or a person of any age. This is because weight is related to height and body composition rather than age. For more information, or to see the height/weight charts, or to learn about the causes of unwanted weight gain, see the page links, further down this page, listed under Related Questions.
Meanwhile, here are a selection of example answers from WikiAnswer users:
As said earlier, there is no ideal weight for 12-year-old because weight is related to height and body composition rather than age.
BMI is your body mass index
Yes, if your BMI is over 30 it is considered obese.
To calculate BMI it needs the height and weight. Then we can measure the BMI.
Normal weight can be found using bmi. But bmi numbers are not accurate all the time.
It's quite heavy yeah, but it also depends on how tall the 12 year old is.You should check the related link below and calculate the BMI of the 12 year old.The BMI will indicate whether he is underweight, normal, overweight or obese.
Omg I have the same bmi and I'm 12 but ya it's healthy just make sure you're being active not a couch potato!
130-150. Check your BMI!
Use a BMI calculation as a starting point.
The proper weight is based on BMI--Body mass Index. It is based on Height and Weight.
It depends on how tall you are. The healthy BMI for someone this age is 15 - 22.
Depends how tall you are but probably not- use a BMI calculator on the internet to give you an idea
yes, its perfect