When Does Adolescence Typically End
Adolescence generally spans from around age 10 to the late teens or early twenties. Many health organizations define it as ending between 18 and 21, depending on the criteria used.
What Marks the End of Adolescence
Physical growth usually slows after puberty, and brain development continues into the mid-twenties. Social and legal milestones, such as voting or financial independence, also signal the shift toward adulthood.
Why the Transition Age Varies
Biological, cultural, and legal factors all influence when adolescence is considered over. For example, the World Health Organization defines adolescence as ages 10 to 19, while some legal systems treat individuals as adults at 18. Read more about adolescent development from the World Health Organization here.
