Calculating age is a common task in many data analysis and reporting scenarios. Excel provides a number of functions that can be used to calculate age based on the date of birth. In this article, we will explore how to use Excel formulas to calculate age.
Using the DATEDIF Function
The DATEDIF function is a hidden function in Excel that is used to calculate the difference between two dates in various units, such as years, months, and days. To calculate age based on the date of birth, we can use the DATEDIF function along with the TODAY function, which returns the current date.
The syntax of the DATEDIF function is as follows:
=DATEDIF(start_date, end_date, unit)
The start_date and end_date are the dates between which the difference needs to be calculated, and the unit is the unit of time in which the difference needs to be expressed, such as "y" for years, "m" for months, and "d" for days.
To calculate age based on the date of birth in cell A1, we can use the following formula:
=DATEDIF(A1,TODAY(),"y")
This formula will calculate the number of years between the date in cell A1 and the current date, which is equivalent to the age.
Using the YEAR and TODAY Functions
Another way to calculate age based on the date of birth is to use the YEAR and TODAY functions. The YEAR function returns the year of a given date, and the TODAY function returns the current date.
To calculate age based on the date of birth in cell A1, we can use the following formula:
=YEAR(TODAY())-YEAR(A1)
This formula will calculate the difference between the current year and the year of the date in cell A1, which is equivalent to the age.
Using the INT and YEARFRAC Functions
The INT and YEARFRAC functions can also be used to calculate age based on the date of birth. The INT function rounds a number down to the nearest integer, and the YEARFRAC function calculates the fractional number of years between two dates.
To calculate age based on the date of birth in cell A1, we can use the following formula:
=INT(YEARFRAC(A1,TODAY()))
This formula will calculate the fractional number of years between the date in cell A1 and the current date, and round it down to the nearest integer, which is equivalent to the age.
Conclusion
Calculating age using Excel formulas is a simple and straightforward task. Depending on your specific requirements, you can choose the formula that best suits your needs. Whether you use the DATEDIF function, the YEAR and TODAY functions, or the INT and YEARFRAC functions, you can easily calculate age based on the date of birth
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