How Old Am I? Calculate by Date of Birth

“How old am I?” is one of the most searched questions online, and the answer is only a date away. With a date of birth calculator you simply enter your birth date and instantly see exactly how old you are — no mental math, no counting on your fingers.

How to find your age by date of birth

Using a how-old-am-I calculator by date of birth takes three quick steps:

• Select your date of birth (day, month and year).
• Leave the second date as today, or pick another date.
• Press calculate to see your exact age instantly.

Behind the scenes the tool counts complete years first, then the leftover months and days, taking leap years into account so the result is always accurate.

Your age in years, months and days

A good age calculator doesn’t just say “how many years” — it breaks your age down into months, weeks, days, hours, minutes and seconds. So whether you want a simple “I am 29 years old” or the full picture of exactly how many years you’ve been alive, you get it in one click.

How old is someone else?

The same tool works for anyone. To find out how old someone is by date of birth — a friend, a child, a celebrity — just enter their birth date instead of yours. It’s handy for forms, birthdays and settling “who’s older” debates.

Is it really free?

Yes. This is a free how-old-am-I calculator by date of birth with no sign-up, no limits and no cost. Every calculation runs privately in your browser, so your birth date is never stored or shared.

Find your exact age now

Enter your date of birth and get your age in seconds — free and private.