Using Excel and need to find someone’s age from their date of birth? There is a function not readily documented by Microsoft, called DATEDIF, which will do just that.
Say the person’s date of birth is in cell B2,
then the syntax required is
TODAY() enters the current date, so that means that the age will automatically update as time goes by.
“y” tells the function that we want the answer in years.
If we want to find how many months since an event, we could use “m” as the final argument.