The two possible birth years for a 1-year-old
Birthday already passed this year
2025
Born 2026 − 1 = 2025. Your birthday fell between January 1 and today, so you have already turned 1 in 2026.
Birthday still coming this year
2024
Born 2026 − 1 − 1 = 2024. Your birthday is later in 2026, so you are still 0 until then.
How to work it out yourself
The formula for finding your birth year from your age is: birth year ≈ current year − your age. For you: 2026 − 1 = 2025. Then apply one simple correction — if your birthday hasn't happened yet this year, subtract one more year (2024). That's why "what year would i be born in if i was 1" always has two valid answers until your birthday arrives.
- Generation (born 2025)
- Generation Beta
- Generation (born 2024)
- Generation Alpha
- Chinese zodiac options
- Dragon or Snake
- Next milestone
- 2 years old
- in 2027
Want the exact day, not just the year?
Enter your full date of birth in the calculator above to see your exact age in years, months, days — even hours and minutes if you know your time of birth. Or go forward instead of backward: pick any birth year in our Birth Year Directory, e.g. if I was born in 2025, how old am i?
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FAQ — If I am 1
Common questions about being 1 years old
If I am 1, what year was I born in?
If you are 1 years old right now, you were born in either 2024 or 2025. You were born in 2025 if your birthday has already happened in 2026, and in 2024 if it is still coming. Enter your full date of birth in the calculator above for the exact date.
What year would I be born in if I was 1 years old?
Subtract your age from the current year: 2026 − 1 = 2025. If your birthday has not occurred yet this year, subtract one more — 2025 − 1 = 2024. So the answer is 2024 or 2025 depending on whether your birthday has passed.
How do I know if I was born in 2025 or 2024?
Check your birthday month/day vs today. If today is on or after your birthday in 2026, you were born in 2025; if before, you were born in 2024. The calculator above works it out exactly, including months/days.
What generation is a 1-year-old?
It depends on which year you were born: 2025 is Generation Beta and 2024 is Generation Alpha. See both on the birth-year guide for 2025.
What Chinese zodiac is someone who is 1?
Either Year of the Dragon (if born in 2024) or Year of the Snake (if born in 2025). Zodiac cycles every 12 years — e.g. 2013 is also Snake.
When will I turn 2?
If you are 1 now, you turn 2 sometime in 2026 on your next birthday. Use Compare Ages to see how your age lines up with family/friends on any past or future date.