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CodexValley

Age Calculator

Available

Find your exact age in years, months and days, and how long until your next birthday.

Use the calculator

The numbers below are examples. Replace them with yours. Everything is worked out in your browser.

About this calculator

Enter a date of birth to see an exact age in years, months and days, the total number of days lived, and the date and countdown for the next birthday. You can also pick any other date to see the age on that day.

How it works

  • Whole years, then whole months, then the days left over are counted between the two dates.
  • Total days are counted from the date of birth to the other date.
  • For a birthday on 29 February, 1 March is used in years that are not leap years.

Common questions

Does the calculator use my time zone?

It works with calendar dates only, not times, so time zones do not change the result.

Why might another site show a different number of months?

Sites differ on how to count months when the day of the month has not been reached yet. Here, months are completed calendar months and the leftover days are counted from the last completed month.

Estimates only. Check important numbers before you rely on them.