The average weight of a 12-year-old varies by biological sex — for females, it is 92 lb, and for males, it is 89 lb. However, for a more accurate idea of whether a young adolescent's weight is healthy, it is important to consider factors such as their height and body composition, and whether they have entered puberty.
Yes, 50 kg is perfectly ok for a 4′9'' 12-year old. A child of your height and age should weigh anywhere from 46 to 61 kg.
The CDC report that the average weight of a 12-year-old male is 89 lb , or about 40 kg.
70kg ÷ 3m2 = 23. So, your BMI is 23, which falls within the healthy weight range.
Current booster cushions, approved for children weighing 15kg and over (around 4 years), can remain on sale and you can continue using them. This is a change to regulations affecting the approval for sale of new products rather than a change to the law on using child seats.
There are 7.71618 pounds in 3.5 kilograms. This is because one pound equals 0.453592 kilograms.
In general, the average height for a 14-year-old boy is about 1.63 meters (5 feet 4 inches) and for a 14-year-old girl is about 1.60 meters (5 feet 3 inches). However, these are just averages and individual heights can be higher or lower.
Healthy weight: BMI is equal to or greater than the 5th percentile and less than the 85th percentile for age, gender, and height. Overweight: BMI is at or above the 85th percentile but less than the 95th percentile for age, gender, and height. Obese: BMI is at or above the 95th percentile for age, gender, and height.
Mid-parental method
Another way to estimate your child's adult height is to add together the height of both parents and divide it by two. Then, some methods say to add 5 inches if they're a boy and subtract 5 inches if they're a girl; others say to only add or subtract 2 ½ inches.
It is quite average. You are not tall,but definitely not short.
For a pediatrician, a “normal height is any height from the 5th to the 95th percentile. For a 12 year old boy in the USA, that is any height from 54” (4′6”) inches to 65″ (5′5″).
Body Mass Index (BMI)
If your BMI is over 30, then you are obese, and your health is being placed at significant risk. For example, if you are 165cm tall and weigh more than 81kg. Bariatric surgery may be an appropriate treatment for you to lose weight, in combination with regular follow up and lifestyle improvement.
But it's very important to realise that children come in very different sizes and while four is the average age for those measurements, a small child may not reach 18kg until they're six, whereas children who are very big for their age may reach that weight when they're as young as two or three.
Dieting to Lose Weight
Likewise, if a person eats more calories than the body uses, the person may gain weight. Kids usually do not need to diet in this way. Unlike adults, kids are still growing and developing. During this time, kids need a variety of healthy foods to keep their bodies growing properly.
Do not take more than 100 micrograms (4,000 IU) of vitamin D a day as it could be harmful. This applies to adults, including pregnant and breastfeeding women and the elderly, and children aged 11 to 17 years.