Feet usually stop growing around 20 or 21 years old, but it’s possible for a person’s feet to keep growing into their early 20s. The most noticeable changes will likely happen during growth spurts in puberty. In boys, puberty typically occurs between ages 10 and 15, and foot growth generally slows down between ages 14 and 16. In girls, feet also stop growing around age 20, and they usually start puberty earlier, between ages 8 to 13 years old. During this time, a girl’s feet will rapidly grow as she goes through growth spurts. Usually, the rate of foot growth decreases between ages 12 to 13.5 in females. However, everyone grows at different rates, and genetics also play a role in determining when feet stop growing. Its important to note that although feet may stop growing once a person reaches a certain age, they may still change size throughout adulthood due to age-related changes like weight gain or loose ligaments.