How old is someone born in 2021?
4 or 5 years old
On Sunday, November 15, 2026
5 if their birthday has already happened this year, 4 if not; they turn 6 in 2027.
Want the exact age? Enter the full date of birth in the age calculator.
Born in 2021
- Generation
- Generation Alpha
- about 2013–2024
- Days alive
- 1,780–2,144
- depending on the birthday
- Jan 1, 2021
- Friday
- Leap year?
- No
- 365 days
More about 2021
- Chinese zodiac
- Metal Oxfrom Chinese New Year (late January or February); born before it, Rat
- 2021 began and ended
- Friday to Friday52 ISO weeks
- February 29ths lived
- 1leap days since 2021
- Turns 18
- 2039and 21 in 2042
Milestone birthdays
| Age | Year | When |
|---|---|---|
| 18 years | 2039 | In 13 years |
| 21 years | 2042 | In 16 years |
| 30 years | 2051 | In 25 years |
| 40 years | 2061 | In 35 years |
| 50 years | 2071 | In 45 years |
| 60 years | 2081 | In 55 years |
| 65 years | 2086 | In 60 years |
| 70 years | 2091 | In 65 years |
| 80 years | 2101 | In 75 years |
| 90 years | 2111 | In 85 years |
| 100 years | 2121 | In 95 years |
Generation names follow Pew Research Center for the Silent Generation to Gen Z and common usage for others; the boundaries are approximate.
Born in the 2020s
Keep exploring
Frequently asked questions
How old is someone born in 2021?
4 or 5 in 2026: 5 once their birthday has passed this year, 4 before it.
What generation is someone born in 2021?
Generation Alpha, usually dated 2013–2024. Generation boundaries are approximate and vary between researchers.
What is the Chinese zodiac sign for 2021?
2021 is the year of the Metal Ox, starting at Chinese New Year in late January or February. Anyone born in 2021 before that date belongs to the year of the Rat. The twelve animals repeat in a fixed cycle, and the element changes every two years.
Was 2021 a leap year?
No — 2021 had 365 days. The nearest leap years were 2020 and 2024.