Age Calculator

Enter your date of birth and get your exact age down to the second. Plus your next birthday countdown, your generation, and your life in numbers.

Date of birth Your birthday

Calculate age as of Default: today

Your age

Months lived

Weeks lived

Days lived

Hours lived

Born on a

Next birthday

Generation

Star sign

Milestone birthdays

Age	Date	Day	Days away

About the Age Calculator

How is my exact age calculated?

The calculator finds the difference between your date of birth and the reference date (default: today). It counts complete calendar years, then remaining months, then remaining days. Hours and minutes are calculated from midnight on your birth date.

What are the generation cutoff dates used?

Baby Boomers: 1946 to 1964. Generation X: 1965 to 1980. Millennials (Generation Y): 1981 to 1996. Generation Z: 1997 to 2012. Generation Alpha: 2013 onward. These are widely used but not universally agreed upon definitions.

Can I calculate the age between two past dates?

Yes. Set both the date of birth and the reference date to any past dates. The calculator works with any two dates.