Return a persons age in years

Cell "A3" displays the date the person was born.

	A
1	=TODAY() = 01/09/2023
2	=NOW() = 01/09/2023
3	=DATE(1990,1,1) = 01/01/1990
4	=INT(YEARFRAC(TODAY(),A3,1)) = 33
5	=DATEDIF(A3,TODAY(),"y") = 33
6	=DATEDIF(A3,NOW(),"y") = 33

Built-in Functions

NOW - The date serial number of the current system date and time.
TODAY - The date serial number representing today's date.
TEXT - The number as a formatted text string.
YEARFRAC - The number of years as a decimal between two dates.
DATEDIF - (Compatibility) The number of days, months or years between two dates.
DATE - The date as a date serial number given a year, month, day.
INT - The number rounded down to the nearest integer.

User Defined Function

AGE - Returns the age of a person given a birthday.

Related Formulas

Add years to a date
Number of months between 2 dates
Number of years months days from a date
Returns a persons age in years months days