If you were born in 2021
If you were born in 2021, you turn 5 during 2026. You are 4 until your birthday in 2026, then 5 afterwards. Enter your date of birth below for your exact age.
The age you reach during a calendar year is that year minus your birth year: 2026 − 2021 = 5. You are one year younger until your birthday falls, then you are 5 for the rest of 2026.
Someone born in 2021 belongs to Generation Alpha, and at 5 is still of compulsory school age — in England, education or training continues until 18.
Age by calendar year for a 2021 birth year:
| Calendar year | Age someone born in 2021 reaches |
|---|---|
| 2026 | turns 5 |
| 2027 | turns 6 |
| 2028 | turns 7 |
| 2029 | turns 8 |
| 2030 | turns 9 |
How it works.
Rule: age = current year − birth year, minus 1 if this year's birthday has not happened yet.
- Subtract the birth year: 2026 − 2021 = 5.
- If today is before the birthday in 2026, subtract 1 → 4.
- The calculator above does this exactly from your full date of birth.
Worked examples
Born 1 January 2021: turned 5 on 1 January 2026, so 5 for essentially all of 2026.
Born 30 June 2021: 4 until the end of June 2026, then 5.
Born 31 December 2021: 4 for almost all of 2026, turning 5 only on the last day.
Frequently asked questions
How old am I if I was born in 2021?
If you were born in 2021, you turn 5 during 2026. You are 4 until your birthday in 2026, then 5 afterwards. Enter your exact date of birth above for the precise figure in years, days and hours.
What generation is someone born in 2021?
Someone born in 2021 belongs to Generation Alpha.
What school year is a child born in 2021 in?
In England, school year depends on the 1 September cut-off, so a child born in 2021 falls into the year group for their age (5 during 2026). Children born 1 September–31 August share a school year.