This website will tell you if you are the right weight for your height and age, because you havent stated your height.
http://kidshealth.org/parent/nutrition_fit/nutrition/bmi_charts.html
I would say that the average 12-year-old weighs about 35-45 kilograms, although it varies from the person's height.
60 kilograms..
100 kilograms
15 kilograms is the average weight for 3 year old boy
It is 42 kilograms.
The average weight for a 14 year old girl is approximately 110 pounds. This would be the equivalent of about 50 kilograms.
65 pounds the average weight is around 30 to 35 kilograms. (i dont know how much that is in pounds)
The average weight for a 10 years old at 132 cm is about 70 pounds. This equates to 31.7 kilograms on the metric scale.
82.6 kilograms is the average weight for a 42 year old man.
The conversion of 28 kilograms to pounds is 61.729. This is about the average weight of an 8 year old child.
It really depends on how tall the 8 year old child is. If the child stands 4 feet 10 inches tall, they should weigh between 41 kilograms and 52 kilograms.
The average weight for a 9-year-old boy is around 60 pounds or 27 kilograms. Three stone is equivalent to around 42 pounds or 19 kilograms, which would be below the average weight for a boy of that age. It's recommended to consult a healthcare provider for a more accurate assessment.