The average weight for a 13-year-old female can be somewhere 101 pounds. But is it normal for your girl to be above or under this average? Keep reading to find it out.
As many of you might know, the average weight for a 13-year-old female can vary, depending on various elements. For instance, puberty is among the most common factors substantially impacting a kid’s weight and even appearance. And the fact is that the timing for these variations is different for girls and boys.
So, in this article, I will provide you with guidelines on a kid’s growth so that you can decide if your little girls are overweight or underweight. More details on the average weight for a 13-year-old female will be discussed as a typical example, as well as BMI and other elements to keep in mind.
What is the Average Weight for a 13-Year old in Kilograms, Pounds, and Stone?
Generally speaking, a normal 13-year-old female has an average weight of 76 to 148 pounds (34.5 to 67 kg). In terms of the 50th percentile, your little girls tend to weigh approx. 101 pounds (45.8 kg). For those who don’t know, the average weight in the 50th percentile means in the weight of 100 girls at the age of 13 years old, there will be 50 kids weighing less than 101 pounds, and 50 weighs more.
You can look at the average weight percentiles for 13-year-old females:
| 5th percentile | 76 pounds |
| 10th percentile | 80 pounds |
| 25th percentile | 89 pounds |
| 50th percentile | 101 pounds |
| 75th percentile | 116 pounds |
| 90th percentile | 135 pounds |
| 95th percentile | 148 pounds |
The fact is that the average weight spectrum for a 13-year-old kid is different with sex. The reason is that the body composition of kids changes not only when they grow up but also for girls and boys.
Most girls begin their puberty and rapid growth around the age of 10 and 11, while boys begin around 11 and 12 years old. Therefore, the average weight for a 13-year-old female tends to be a little bit higher than a 13-year-old boy.
In particular, the average weight for a 13-year-old girl is approx. 101 pounds, or 7 stone 3 pounds, or 45.8 kilograms. On the other hand, the average weight for a 13-year-old boy is 1 pound lighter than for their counterparts. Here is 100 pounds, or 7 stone 2 pounds, or 45.3 kilograms.
Generally speaking, weight averages for kids are expressed as BMI for age, which depends on age and gender. BMI scores are easily calculated by dividing kids’ weight in kilograms by the square of their height in meters.
Children of 13 years old with an average weight measurement that is in the healthy or normal weight classification are considered healthy.
You can also look at the following height to weight chart for teenage girls from 13 to 20 years old:
| Age | Weight | Height |
| 13 yrs | 101.0 lb (45.8 kg) | 61.7″ (156.7 cm) |
| 14 yrs | 105.0 lb (47.6 kg) | 62.5″ (158.7 cm) |
| 15 yrs | 115.0 lb (52.1 kg) | 62.9″ (159.7 cm) |
| 16 yrs | 118.0 lb (53.5 kg) | 64.0″ (162.5 cm) |
| 17 yrs | 120.0 lb (54.4 kg) | 64.0″ (162.5 cm) |
| 18 yrs | 125.0 lb (56.7 kg) | 64.2″ (163 cm) |
| 19 yrs | 126.0 lb (57.1 kg) | 64.2″ (163 cm) |
| 20 yrs | 128.0 lb (58.0 kg) | 64.3″ (163.3 cm) |
If you are looking for information about the average weight for other ages, you can check out our article on the average weight for 9-year-old boys and girls. It includes information about the average weight range for both genders, as well as tips for maintaining a healthy weight.
Should a 13-Year-Old Female Go on a Diet?
It is not always necessary to go on a diet if your baby girl’s BMI result falls into the overweight or obesity spectrum. On the other hand, it is much more crucial to understand that diet is not the only element affecting your kids’ health. There are a lot more factors influencing their weight and health in general. In this case, it is best to consult a physician or a registered dietitian nutritionist for assessment measures as well as solutions.
In fact, dieting can enhance health risks for your 13-year-old girls. Teens should not actively try to lose weight unless under the guidance and close supervision of a doctor and dietitian. Instead, developing the right healthy habits will help a 13-year-old girl and boy reach a much healthier weight than dieting alone. If not done properly, dieting can even enlarge disordered eating patterns and unhealthy habits.
What Factors Control The Average Weight For A 13-Year-Old Teen?
Actually, the true average weight for a 13-year-old female is more difficult to determine. This is because there are quite a lot of things that can affect younger teens’ body weight. They include:
Genetics
Although activity levels and diet are important, body composition and shape might also be affected by the genes that your kids inherit from you. That is to say, people from various genetic backgrounds typically have various body compositions or fat distributions, which can affect the size, shape, and weight.
Genetics is an important factor that influences the average weight for a 13-year-old female. If you’re curious about how tall you might grow, use hair growth calculator to predict your hair length.
Development speed
Almost all kids start their puberty sometime from 8 to 14 years old. You will see a lot of different body sizes and weights when taking a sample of 13-year-old children from a similar room. Some children might have finished their puberty, while others are just starting to enter different changes resulting in physical maturation.
Height
One of the most common elements influencing your kids’ weight is their height. Shorter kids might weigh less than taller ones, but it is not always the case. Muscle mass and bone density are two other critical factors. In addition, you should note that there is a wide range of variations in body composition.
Usually, fat weighs less than muscle, so if a kid who is leaner or storing more fat instead of muscle tends to weigh less than those who are more muscular.
You can easily convert your height in centimeters to feet and inches or vice versa using the height converter tool available on the website. This can be particularly helpful when trying to determine the medical acceptable height ranges for your age, as it varies from country to country.
Location
You might not believe it, but the place where your kids live might also impact their body weight, height, and size. This might be related to several things, such as genetics, cultural practices, socioeconomic level, access to food, the beginning of puberty, etc. All of these elements can be changed depending on geographic location all over the world.
Body Mass Index Consideration
Generally speaking, body mass index (BMI) is considered a standard for measuring body fat percentage using weight and height without other direct approaches, such as skinfold, water weighing, etc. For adolescents, BMI measurements also take gender and age into account, also known as BMI-for-age. This score shows where your kid jumps in the range of other children of the same age.
To measure your kid’s BMI, you can use this reliable online BMI calculator. It is offered by the Centers for Disease Control and Prevention. You just need to enter your kid’s weight, height, gender, and age. Then you will get the BMI score that might denote whether your kid is healthy weight, underweight, overweight, or obese.
| Percentile | Assessment |
| Under the 5th percentile | Underweight |
| 5th to 85th percentile | Healthy weight |
| 85th to 95th percentile | Overweight |
| 95th percentile or over | Obese |
Conclusion
So now you know that the average weight for a 13-year-old female is around 101 pounds, or 7 stone 3 pounds, or 45.8 kilograms. But it is important to note that your teen girl can be under or over this average because there are a wide variety of factors influencing her body weight and size.
