# The Ideal Weight for a Teenage Girl

Despite what the magazines may have you think, there isn't an average weight for a 15-year-old female. What is considered a healthy weight range for girls varies based on a number of factors, including their age, height and developmental state.

The healthy weight for a teenage girl varies.
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A teen's pediatrician can determine whether she is at a healthy weight and provide strategies to get there. Although weight is an important aspect of a girl's health, it is only one factor that determines overall well-being.

## Ideal vs. Average Weight

Not everyone at the same age and height should necessarily weigh the same amount, especially in the teenage years. The average weight for a 15-year-old female may depend on multiple factors, including, body type and stage of development as girls tend to gain more body fat as they go through puberty and develop larger breasts and hips.

However, you can get a general idea of what is healthy for a girl at a given age by looking at the weight chart by age used by many pediatricians. For example, at 13 years old, the average weight for a girl is about 101 pounds. The average weight for a 15-year-old female is about 114 pounds, and that of an 18-year-old female is about 123 pounds.

Keep in mind that these are average weights, not necessarily the ideal weights, which are usually expressed in a range rather than a single number. A person's ideal weight range also depends on her height. For example, the ideal weight for a 5-feet, 2-inch female in kg or kilograms is 47.2 to 61.4 or 104 to 135 pounds.

## Looking at BMI Percentile

Doctors typically use body mass index percentiles to determine whether a teenage girl is within the right weight range. BMI is calculated by dividing weight in kilograms by height in meters, then dividing the total by height in meters again.

The resulting BMI can then be looked up on a chart that gives BMI-for-age percentiles for girls. Anything between the 5th and 85th percentile is considered normal. For a 13-year-old girl, a BMI between 15.4 and 22.6 is within the normal range. For an 18-year-old girl, an acceptable range would be between 17.6 and 25.6.

Read more: Healthy Eating for a 16-Year-Old

## Don't Take BMI to Heart

While BMI can be a useful screening tool, it shouldn't be the only tool used. It is an estimate of body fat, not an actual measurement. Thus, a girl who is very muscular or has a larger frame may not have a lot of body fat even though she has a higher BMI, while a small-framed girl without a lot of muscle could still have a low BMI even though she has a higher body fat percentage than is healthy.