How it's calculated
To find the age of someone born in 2021: subtract 2021 from today's year (2026) — that gives 5 years. If their birthday has not yet occurred this year, subtract one more year for 4 years.
Nearby birth years
See how old someone from a nearby birth year is today.
Frequently asked questions
When will someone born in 2021 turn 18?
Someone born in 2021 will turn 18 on their birthday in 2039. For reference, they will be 9 years old in 2030, 19 years old in 2040, and 29 years old in 2050.
How old was someone born in 2021 in 2022?
Someone born in 2021 was 1 years old for most of 2022. Exact age depends on whether their birthday had occurred yet in 2022.
What generation is someone born in 2021?
Someone born in 2021 belongs to Generation Alpha. Pew Research defines Generation Alpha as people born 2013–2024. Generational bands are approximate — different sources draw the boundaries a year or two apart.
Related calculations
- Age calculator — main page — Calculate any two-date age.
- Age if born in 2016 — Five years earlier cohort.
- Age if born in 2026 — Five years later cohort.
