Are you curious about a person’s age on a specific date? If yes, then read this article to learn how you can use an **online birthday age calculator** to find out the exact age of a person.

You’ll learn how to enter a person’s birthday and date of birth in a specific format to calculate their age in months, days, or hours.

A year is made up of twelve months, 52 weeks, and 365 days, or 364 days in leap years. That’s 8,760 minutes and 525,600 seconds.

## How to Find Out a Person’s Age on a Specific Date

If you need to know a person’s age on a certain date, you can use an online birthday calculator. These calculators work by entering the person’s date of birth and the current date.

They also allow you to enter another date if you want. The default date is the current day, but you can also enter a different date.

Enter the date in US format, which means mm/dd/yyyyy, and use four digits for the year. Another way to get a person’s age on a particular date is to look up an ID number.

A person’s ID number has 13 digits, with the first six representing the date of birth. If you don’t have this information, you can use the calculator to find out a person’s age on a specific date.

## How to Calculate a Person’s Age From a Date of Birth

You may be wondering how to calculate a person’s age from their date of birth. If you’re using Excel to calculate someone’s age, the trick is to use the Date function, which will calculate the number of years between their date of birth and the present day.

Once you’ve entered the data in the table, you can then paste it into a new worksheet by choosing the Paste Options menu and keeping the source formatting.

You can then enter the formula for age in a cell of your worksheet. The DATEDIF function is another function that allows you to calculate someone’s age from their date of birth.

It takes three arguments: date, year and cell reference. Enter the person’s date of birth in cell A2, the TODAY function in cell B2, and the person’s age in cell C2.

The DATEDIF function will calculate the **number** of complete years between the two dates and display the result as the person’s age.

### How to Use an Online Age Calculator

If you have a certain date in mind, you can easily find out how old someone is by using an online birthday age calculator. The process of calculating an age can be tricky in some instances, but it is possible with some tools.

For instance, if you were born on November 7th but want to find out your age on February 27th, you can simply enter their birth year into a birthday age calculator and receive the results within a blink of an eye.

To use an age calculator, first enter the starting and ending date of the person’s birthday. The result will be displayed in days, months, and hours.

Each month has 30 days, while February has 29. The age calculator will display the result in years, months, and days. One year has twelve months, fifty-two weeks, 365 days, and one leap year has three extra days. Each month is the equivalent of 8,760 hours or 525,600 minutes.

**Read More: ****How Do the Best Age Calculator Online From the Date of Birth**