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✦ Free Tool

Age Calculator

Calculate your exact age from your date of birth. Find your age in years, months and days on any date.

How Does the Age Calculator Work?

1

Count Full Years

We find how many complete years have elapsed. A year is only counted once your birthday has fully passed in the current year.

2

Count Remaining Months

After subtracting complete years, we count how many full calendar months remain until the target date.

3

Count Remaining Days

Leftover days are counted precisely from the last full-month mark, accounting for all month lengths — 28, 29, 30, or 31 days.

4

Handle Edge Cases

Feb 29 birthdays, variable month lengths, and all leap-year days are handled with calendar arithmetic — never millisecond division.

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Age Calculator FAQs