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How to use
- 1Enter the age and the year when that age was observed.
About
Approximate result: the birthday can shift the year by one.
Birth year calculator
Estimate a birth year from an age and reference year.
Subtract age from the reference year. The birthday may make the result approximate.
Examples
- Age 30 in 2026 → approximately 1996.
Limitations
- Without month and day, the result may be off by one year.
How to calculate birth year
- 1Enter age.
- 2Enter reference year.
- 3Check the estimate.
Frequently asked questions
Why can it vary by one year?
Age changes on the birthday, not on January 1.
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