Age Calculator
Exact age in years, months, and days — as of today or any date you choose.
Defaults to today.
Enter a birth date.
What is this tool?
This tool calculates a calendar-accurate age breakdown (years, months, days, and total days) between a birth date and either today or a custom 'as of' date — the same way people naturally count birthdays.
How to use it
- Enter a birth date.
- Optionally check “Custom date” to calculate age as of a specific date instead of today.
- Read the years/months/days breakdown and total day count.
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