What Is The Average Weight For A 12 Year Old?

According to the CDC, the normal weight of a 12-year-old boy is between 67 and 130 pounds, and the 50th percentile weight is 89 pounds.

If your child’s weight is in the 50th percentile, it indicates that out of 100 kids their age, 50 may weigh greater than they do, and 50 may weigh less.

If your child’s weight falls within the 75th percentile, it indicates that, out of 100 children their age, 25 may weigh greater and 75 may weigh less.

As children enter puberty, their weight might fluctuate greatly. According to Johns Hopkins Medicine, some children may enter puberty as early as age 8, while others may not see changes until closer to age 14.

Children grow 10 inches taller during puberty before attaining their full adult height. In addition to gaining muscle and developing new fat deposits, their bodies transform into those of adults.

This transformation may result in considerable weight fluctuations and feelings of self-consciousness.

What Is The Average Weight For A 12-Year-Old Boy?

Typically, twelve-year-old males weigh between 67 and 130 pounds, with 89 pounds representing the 50th percentile.

  • 5th percentile: 30.4 kilograms
  • 10th percentile: 32.3 kilograms
  • 25th percentile: 35.3 kilograms
  • 50th percentile: 40.3 kilograms
  • 75th percentile: 46.7 kilograms
  • 90th percentile: 54 kilograms

What Is The Average Weight For A 12-Year-Old Girl?

Girls aged 12 typically weigh between 68 and 135 pounds, with 92 pounds representing the 50th percentile.

What is the average weight for a 12-year-old?
  • 5th percentile: 30.8 kilograms
  • 10th percentile: 32.6 kilograms
  • 25th percentile: 36.7 kilograms
  • 50th percentile: 41.7 kilograms
  • 75th percentile: 48 kilograms
  • 90th percentile: 55.8 kilograms

What Is Overweight For A 12-Year-Old?

Children who are overweight lie between the 85th and 95th percentiles, but children who are obese have a BMI equal to or higher than the 95th percentile. Therefore, healthy body weight for a 12-year-old girl can normally range between 65 and 120 pounds.

What Factors Control 12-Year-Old Teenagers’ Average Weight?

Calculating the ideal weight for a 12-year-old is more complicated than placing numbers on a chart. Multiple factors influence the ideal weight for 12-year-old children.

Rate Of Growth

Due to increases in height, the muscular mass, and fat reserves, a child’s weight might fluctuate fast when puberty begins.

Since puberty can begin at any age between 8 and 14, some 12-year-olds may have completed the process while others are just beginning or will not begin puberty for a couple more years.

Height And Physique

Additionally, your child’s height influences their weight. This is not an absolute rule, although taller children may weigh more than their shorter friends. Additionally, body shape, muscle mass, and frame size all influence weight.


Genes inherited from parents also affect a child’s height, body mass, and other physical characteristics. This indicates that a child’s weight may be somewhat predetermined, independent of their food and activity habits.


The environment in which a child grows up may also affect their weight and body size. Globally, puberty begins at varied ages. 

How To Improve A 12-Year-Old Teenager’s Development

When your children are 12 years old, there are other factors to consider besides their average weight. It is ultimately more vital for them to live a healthy lifestyle, as their weight has little

Influence in this context. You must prioritize these parts of their lives to ensure they are as healthy and robust as possible.


At this age, most youngsters eat a variety of foods, but generally not too many. These include eliminating snacking from their diet, providing children with a wide variety of colorful foods, and sharing meals with them while conversing.

It is comparable to having intellectual, meaningful talks.

What is the average weight for a 12-year-old?

Sleeping Habits

At age 12, children typically fall asleep quickly. Nonetheless, people are also kept awake for various reasons. They may have too much homework, despite their want to play games or be with their peers.

Sexual Instruction

At this age, children are exploring their bodies and what they are capable of doing. This is also a good moment to discuss sexuality with your child if you haven’t already.

They typically enter puberty earlier than children of past generations so that they may be more conscious of it.

Health Enhancement

It is less significant how much your 12-year-old child weighs than how healthy they are. Therefore, health promotion is extremely important for children of this age.

You should encourage healthy behaviors and pursuits, such as positive social circles and moderate entertainment (such as television, video games, and movies).

Complications Of Underweight Or Overweight

A doctor may be concerned about a young adolescent’s weight and health if:

  • Their weight falls inside the 3rd percentile on the CDC’s growth chart. Their weight exceeds the top or lower percentiles. There has been a significant change in their weight.
  • When young adolescents’ weight falls drastically above or below the average, they may be at risk for developing health concerns. Listed below are some examples.
This can lead to the underdevelopment of particular muscles.high cholesterol levels
This chromosomal abnormality can lead to delayed development of specific muscles.high blood pressure
These can interfere with the body’s capacity to convert food into energy.impaired glucose tolerance
This hereditary disease can limit the absorption of calories.type 2 diabetes

Frequently Asked Questions

1. What is the average weight for an 11-year-old?

The average weight of a child aged 11 is approximately 78.5 pounds (35.6 kg).

2. What is the average weight for a 13-year-old?

A 13-year-old boy weighs between 75 and 145 pounds, and a 13-year-old girl weighs between 76 and 148 pounds. The 50th percentile of weight for males is 100 pounds. For women, the median weight is 101 pounds.

3. What is the average weight for a 14-year-old?

The average weight for 14-year-olds is 52 kg.

4. What is the average weight for a 15-year-old?

The average weight for 15-year-olds is 123.5 lb.

5. What is the average weight for a 16-year-old?

Therefore, for 16-year-olds, it is advised that females weigh 53.9 kilograms (119 pounds) and boys weigh 61.1 kilograms (134 pounds).

Children may wish to decrease weight if they believe they are “overweight” compared to their peers at age 16.

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