Age Calculator
Calculate age in years, months and days from a birth date. See the next birthday, the weekday of birth and the total number of days lived.
How to use
- Enter the birth date.
- Adjust the reference date if needed.
- Press Calculate age.
The age calculation uses the civil calendar and considers leap years.
Frequently asked questions
How is age calculated?
It is the calendar difference between the birth date and the reference date, in years, months and days.
Can I use another reference date?
Yes. It is useful for documents and simulations.
What about February 29?
In non-leap years, the next birthday is adjusted to February 28.