How old is someone born in 2015?
Subtract 2015 from 2026 to get 11. If the person's birthday has not happened yet this year, subtract one, making the age 10. A full birth date is needed for an exact result in years, months, and days.
Why two ages are shown
A birth year alone does not include the month and day. During 2026, everyone born in 2015 turns 11, but before that birthday they remain 10.
About generation labels
Generation Alpha is a commonly used label for people born in this period. Generation boundaries vary by source and are descriptive, not scientific or legal categories.