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Everyday Life Calculators
Age Calculator
Calculate exact age in years, months and days between a birth date and any reference date.
Years
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Months
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Days
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Total days lived
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About the Age Calculator
The age calculator finds your exact age by comparing a birth date to a reference date, correctly accounting for whether your birthday has already occurred this year rather than just dividing total days by 365.
How it works: Start with the year difference, then subtract a month if the reference day-of-month falls before the birth day-of-month, and borrow days from the previous month if needed.
Useful for legal age checks, birthday planning, and anywhere an exact age in years, months and days is required.
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