All tools
Age Calculator

Age calculator

Find your exact age in years, months and days — or calculate the age between any two dates.

  • Exact age to the day
  • Total days, weeks and months lived
  • Days until next birthday
  • Works for any historical date
/ /
/ /
Please enter a valid date of birth.

Why calculate your exact age?

Knowing your precise age in days or weeks has practical uses — from milestone birthday planning to legal eligibility checks and pension calculations.

How is the "days until next birthday" calculated?
The calculator finds the next occurrence of your birth month and day from today, then counts the days remaining — accounting for leap years.