The mean weight that a 13-year-old can vary, depending upon a number of factors. Puberty, for example, have the right to significantly affect a child’s weight and appearance, and the time of these changes is various for boys and also girls.

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The Centers for condition Control and Prevention (CDC) have set guidelines for healthy and balanced weight and also body mass index (BMI) in children.

These guidelines can assist doctors and also parents or caregivers monitor a child’s growth and also determine whether they are underweight or overweight, because that example.

This post will comment on the median weights for 13-year-old boys and also girls, as well as BMI and other determinants to consider.

Share ~ above PinterestThere space multiple components that can affect average weight.
According come the CDC, many 13-year-old girls weigh in between 76 and 148 pounds (lb).

The 50th percentile for weight in this group is roughly 101 lb. This way that around 50% of girl this age weigh less than 101 lb.

If a 13-year-old girl weighs under the 5th percentile, a doctor might classify this together being underweight.

If a 13-year-old girl weighs above the 95th percentile, the doctor might diagnose obesity. However, height comes right into play, too.

Here are the percentiles by weight for 13-year-old girls:

5th percentile76 lb
10th percentile80 lb
25th percentile89 lb
50th percentile101 lb
75th percentile116 lb
90th percentile135 lb
95th percentile148 lb

Average weight for boys

According to the CDC, many 13-year-old guys weigh between 75 and also 145 lb.

The 50th percentile for load in this group is about 100 lb. This way that 50% the 13-year-old guys weigh much less than 100 lb.

If a 13-year-old boy weighs under the fifth percentile, a doctor might categorize this as being underweight.

On the various other hand, if a young in this period group weighs much more than the 95th percentile, the doctor may diagnose obesity. However, castle take height into consideration.

Here are the percentiles by load for 13-year-old boys:

5th percentile75 lb
10th percentile80 lb
25th percentile88 lb
50th percentile100 lb
75th percentile116 lb
90th percentile133 lb
95th percentile145 lb

Share on PinterestWhen calculating a son or teenager’s BMI, the is necessary to incorporate their age.

BMI is a means to estimate body fat percentage. The calculate incorporates weight and also height. A high BMI can indicate high amounts of body fat. That can additionally indicate an raised risk that weight-related health and wellness issues.

For a an ext accurate assessment of human body fat, a person can look into skinfold measurements, underwater weighing, and bioelectrical impedance. However, these tests may be complicated and expensive, and the outcomes tend come correlate well through BMI.

Calculation that BMI is different for adults and also children. In children and teenagers, BMI takes period into account, and doctors describe it “BMI because that age.”

The CDC provide a BMI calculator because that children and teens. A human being enters the child’s height, weight, and also sex. The results give the BMI and also indicate whether the load is in a healthy range.

BMI, like typical weight, drops into percentiles. These can aid parents, caregivers, and pediatricians recognize whether a child weighs a healthy amount for their age and height.

Under the fifth percentileUnderweight
5th to 85th percentileHealthy weight
85th come 95th percentileOverweight
95th percentile or overObese

A range of determinants can influence the weight of a 13-year-old, including:

Puberty and also development

Puberty is a time that physical readjust in children and also teenagers. It involves the human body preparing for sex-related maturity.

Puberty typically occurs in girls in between the ages of 10 and 14 and in boys in between the eras of 12 and 16. The process can be very different because that boys and girls.

Puberty can cause height and weight in 13-year-olds to range broadly.


Genetics, and lifestyle characteristics, such as diet and also physical activity, play a role in a child’s weight and body type.

Research argues that part genes space strongly linked with obesity.

Body composition

The many variables in a person’s human body composition can influence exactly how much lock weigh. For example, some civilization are an ext muscular, and they might weigh more because muscle weighs more than fat. This might specifically affect athletic children.

Also, taller kids are most likely to weigh more than much shorter children, return this is not constantly the case. Since the BMI calculation takes elevation into account, that can give a much better idea of healthy ranges 보다 weight alone.

Geographic location

The country that a child lives in can contribute to your body composition, weight, and development.

These distinctions are due to factors such together socioeconomic status, accessibility to nutritious foods, and cultural traditions.

If a son is underweight, consuming much more calories may assist them reach a healthier weight. A physician can offer advice about whether this is necessary and also the best way to go around it.

If a child’s weight falls into a range of overweight or obesity, a physician can provide advice about reaching a healthier weight. They may recommend to decrease caloric intake and increasing physical activity.

It is an especially helpful and also important for family members of kids with excessive weight to job-related toward healthier habits.

Childhood weight problems is associated with a higher risk of:

sleep apneahealth problems involving the bones and joints

Also, excessive weight can extend into adulthood. Researcher have found links in between obesity in adulthood and chronic health problems, such together heart disease, kind 2 diabetes, and specific cancers.

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Any parental or caregiver that is concerned about a child’s growth or breakthrough should top a pediatrician.