If you were born in 1999, you are 26 or 27 years old in 2026 (depending on whether your birthday has passed). Born in 1999 age: 27 years.
Born in 1999: you are 26 years old before your birthday in 2026, and 27 years old after. Generation: Generation Z.
If born in 1999, you are 26 or 27 years old in 2026.
Born in 1999: Gen Z.