Birth year by age

What Year Were You Born If You Are 42?

If you are 42 years old in 2026, you were born in 1983 or 1984, depending on whether your birthday has passed.

If you are 42 years old in 2026, your birth year is:

1983 or 1984

Born in 1984 if your birthday has already occurred this year; otherwise, born in 1983.

Current age42

Possible birth years1983–1984

Turns this age during2026

What year were you born if you are 42?

Subtract 42 from 2026. The result is 1984. If your birthday is still coming up in 2026, your birth year is one year earlier: 1983.

Why the answer can be two different years

Age changes on a birthday, not on January 1. Without your birth month and day, both 1983 and 1984 are possible. Use the exact calculator to resolve the date precisely.