It all depends on your height. I am 5' 3" and I weigh around 120 lbs. I would say (now it all depends on height) around 100-120.
You cannot express weight in centimeters.
about 80-100 pounds.
The average is 45kg, but in the 50's is ok.
About 150 pounds
85 pounds
it is 35 or 36
A twelve-year-old who has that height should have a weight of between 90 and 99 pounds. The average twelve-year-old with that height often weighs 91 pounds.
I am not certain, But i think that is pretty bad! The average weight for a twelve year old would be around 120 lb to 130 lb. I am a twelve year old female and i weigh 140 lb, And that isn't very good either.. ;p
You can not calculate a healthy weight by age and average as everybody is genetically differant. The best way to check the health of the twelve year old is. BMI, (body mass index), which is calculated by either:- Height and weight. OR Weight and waist size.
about 90 pounds
They should probably weight about 100-115 pounds
The standard weight for the aberage twelve year old boy is between 90 lbs. to 110 lbs.