Enter your age and tell us whether your birthday has happened in the reference year.
Has your birthday happened in that year?
Your likely birth year
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How the birth year calculation works
If your birthday has already happened in the reference year, subtract your age from that year. If your birthday has not happened yet, subtract one additional year.
Age 40 in 2026 after the birthday: born in 1986.
Age 40 in 2026 before the birthday: born in 1985.
When the birthday status is unknown, two possible birth years are shown.