Age Calculator Online — Exact Age in Years & Days
Enter a date of birth to get your exact age in years, months and days — plus total days lived and the date of your next birthday.
Age Calculator
Enter a date of birth to get exact age in years, months and days — plus total days lived.
- Your age
- —
- Months & days
- —
- Total days lived
- —
- Next birthday
- —
How to use it
- Pick the date of birth.
- Tap “Calculate age”.
- Read years, months, days and total days lived.
Frequently asked questions
How is age calculated?
By comparing the birth date with today, counting full years first, then the remaining months and days.
Does it handle leap years?
Yes — the calculation uses real calendar dates, so 29 February birthdays are handled correctly.
What is “total days lived”?
The exact number of days between the birth date and today, including leap days.
Is my birth date stored?
No — the calculation runs in your browser and the date is never sent anywhere.
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