A healthy weight for a 13-year-old child varies widely depending on factors such as height, gender, body composition, and overall growth patterns. Instead of focusing on a specific number, healthcare providers often use growth charts and Body Mass Index (BMI) percentiles to assess whether a child's weight is within a healthy range.

• Growth Charts: These charts compare a child's weight and height to standardized percentiles for their age and gender.

• BMI Percentiles: BMI is calculated using weight and height, and the percentile indicates how a child's BMI compares to peers. A BMI between the 5th and 85th percentile is generally considered healthy.

If you are concerned about a child's weight or growth, it's best to consult a pediatrician who can provide personalized guidance based on the child's unique health profile and development stage.