aklappsFast, free online tools

Age Calculator

Your exact age in years, months and days — plus the next birthday countdown.

Pick the day you were born.

More options
As of dateThe day to measure age on. Defaults to today.
Exact age
In full
Next birthday
Days until then
Total days lived
Total weeks lived
Calculated on your device. Nothing is sent or saved.

How your age is worked out

We count whole calendar years from your date of birth, then whole months, then the leftover days — the same way you'd say "32 years, 5 months and 3 days". Because months and years vary in length, this is more accurate than simply dividing the total days.

The total days and total weeks figures count every calendar day from your birth date up to the "as of" date, midnight to midnight. Weeks are just the day count divided by seven.

The next birthday countdown

We find your next birthday on or after the "as of" date and show how many days remain. If you were born on 29 February, in non-leap years the birthday is counted as 28 February.

Tips

  • Open More options to set an "as of" date — handy for working out someone's age on a future or past date.
  • Leave the "as of" date blank to use today.
  • Use Copy result to paste the full breakdown into a message or note.

Everything runs in your browser; your date of birth is never uploaded or stored.

Frequently asked questions

How do I calculate my exact age?

Enter your date of birth and the tool shows your age in years, months and days, plus extras like total days and your next birthday.

Can I find my age on a specific date?

Yes. Open More options and set the as-of date to any date you want.

How are the months and days worked out?

It counts whole years, then the remaining whole months, then the leftover days, accounting for different month lengths and leap years.

Is my date of birth stored?

No. Everything is calculated in your browser; nothing is uploaded or saved.