What are the standard weight and height for a 14-year-old boy?

Regarding standards, I would like to present a reference chart to you. Please take a look—this is the national growth chart for height and weight of boys aged 2 to 18 years. So, what range is considered “normal”? Please observe: the area between the second-to-last percentile line and the second percentile line from the top represents the normal range.

But how do we determine what constitutes a normal height and weight for an individual child? We need to track that child’s longitudinal growth pattern—that is, their height and weight measurements over time—to assess whether a specific 14-year-old boy’s current height and weight align with his personal growth trajectory. In other words, we recommend regular height and weight measurements across all age groups. For example, for a 14-year-old, we advise monitoring height and weight every six months, enabling us to clearly evaluate whether his growth and development are proceeding within the normal range.