The age at which we stop growing varies depending on several factors such as genetics, sex, and the timing of puberty. Here are the age ranges at which people typically stop growing:

• Boys: Most boys grow very little after the age of 18, and in rare cases, some may continue to grow into their early twenties. The reason most boys stop growing at this age is because their growth plates fuse shortly after puberty. Boys grow fastest during puberty, which can last two to five years, and their biggest growth spurt will be between the ages of 12 to 15.

• Girls: Girls usually stop growing by around age 15, and they reach their adult height when puberty comes to an end. The timing of puberty plays a pivotal role in when a girl will reach their full adult height. While girls tend to start and end puberty earlier than boys, a biological difference usually isnt noticeable until after the age of 10. Girls can enter pubertal development as early as age 8, whereas boys might be 9 or 10 years old if theyre on the early end.

Its important to note that every individual grows at different rates, and puberty begins and ends at different times for everybody.