Age Calculator
Enter your birth date and optionally an end date (default is today). Get your exact age in years, months, and days. Useful for forms, eligibility, or curiosity.
Calculate age
Enter birth date and click Calculate.
How it works
We compute the difference between the two dates and break it into full years, remaining months, and remaining days. Leap years and month lengths are accounted for.
When to use it
Use it when you need age for applications, to see how many days until a birthday, or to compare two dates.
Frequently asked questions
- Is the result exact? Yes. We use calendar arithmetic so the age is exact for the given dates.
- Can I use a future end date? Yes. If the end date is before the birth date you will get zero or negative age.