Age Calculator
Calculate your age in full years and the total number of days since birth.
Last updated: 2026-03-28
What this page helps you check
Use your birth date to calculate your current age in full years and the total number of days since birth.
- Confirm your age for forms or applications
- Check elapsed days since a birthday or personal milestone
How to read the result
Leap-day birthdays are treated as February 28 in non-leap years. For official applications, always confirm the age rule used by the organization you are dealing with.
FAQ
- How is age handled on the birthday itself?
- The calculator treats the birthday as the point when age increases by one full year.
- What happens for February 29 birthdays?
- In non-leap years, February 29 birthdays are treated as February 28 for age rollover.
- Can I calculate age on another date?
- The current version calculates age relative to today only.