How to use the Age Calculator
- Enter the date of birth.
- Optionally change the 'age on' date (defaults to today).
- Read the exact age and birthday countdown.
Frequently asked questions
How is age calculated?
We count full years since the birth date, then full months after the last birthday, then the remaining days.
What if I was born on February 29?
In non-leap years, the birthday countdown uses March 1.