The average weight that a 13-year-old can vary, depending upon a number of factors. Puberty, because that example, can significantly impact a children weight and also appearance, and also the time of these changes is different for boys and girls.

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

These indict can help doctors and also parents or caregivers monitor a child’s growth and also determine even if it is they are underweight or overweight, because that example.

This write-up will talk about the median weights because that 13-year-old boys and also girls, and BMI and also other factors to consider.

Share ~ above PinterestThere room multiple components that can influence average weight.
According to the CDC, most 13-year-old girls weigh in between 76 and also 148 pounds (lb).

The 50th percentile for load in this group is roughly 101 lb. This means that around 50% of girls this age weigh less than 101 lb.

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

If a 13-year-old girl weighs above the 95th percentile, the doctor might diagnose obesity. However, height comes 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 load for boys

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

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

If a 13-year-old young weighs under the 5th percentile, a doctor may categorize this together being underweight.

On the other hand, if a young in this period group weighs more than the 95th percentile, the doctor might diagnose obesity. However, lock take elevation 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 ~ above PinterestWhen calculating a son or teenager’s BMI, that is essential to incorporate their age.

BMI is a way to estimate body fat percentage. The calculation incorporates weight and height. A high BMI have the right to indicate high amounts of body fat. The can likewise indicate an boosted risk the weight-related health issues.

For a much more accurate assessment of human body fat, a person deserve to look right into skinfold measurements, underwater weighing, and also bioelectrical impedance. However, these tests might be complex and expensive, and also the results tend come correlate well with BMI.

Calculation the BMI is different for adults and children. In children and teenagers, BMI takes period into account, and also doctors refer to it “BMI for age.”

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

BMI, like median weight, falls into percentiles. These can assist parents, caregivers, and pediatricians recognize whether a boy weighs a healthy amount for your age and also 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 load of a 13-year-old, including:

Puberty and also development

Puberty is a time of physical readjust in children and teenagers. It requires the human body preparing for sexual maturity.

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

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


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

Research suggests that some genes are strongly linked with obesity.

Body composition

The numerous variables in a person’s body composition deserve to influence how much lock weigh. Because that example, some human being are more muscular, and also they may weigh an ext because muscle weighs an ext than fat. This might specifically affect athletic children.

Also, taller children are likely to weigh an ext than much shorter children, although this is not always the case. Due to the fact that the BMI calculation takes height into account, the can provide a better idea of healthy and balanced ranges than weight alone.

Geographic location

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

These differences are early out to components such as socioeconomic status, accessibility to nutritious foods, and social traditions.

If a child is underweight, consuming an ext calories may aid them reach a healthy weight. A doctor can give advice about whether this is necessary and also the best means to go around it.

If a children weight drops into a selection of overweight or obesity, a physician can offer advice about reaching a healthy weight. They may recommend decreasing caloric intake and also increasing physical activity.

It is particularly helpful and also important for family members of youngsters with weight problems to job-related toward healthy habits.

Childhood weight problems is connected with a greater risk of:

sleep apneahealth concerns involving the bones and also joints

Also, weight problems can extend into adulthood. Researchers have found links in between obesity in adulthood and chronic health problems, such as heart disease, kind 2 diabetes, and details cancers.

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Any parent or caregiver who is concerned about a child’s growth or development should consult a pediatrician.