DATEDIF Function
Age Calculation - Using DATEDIF()
Category : Sample
Location : Sample
You can calculate a persons age based on their birthday and todays date.
The calculation uses the DATEDIF() function.
The DATEDIF() is not documented in Excel 5, 7 or 97, but it is in 2000.
(Makes you wonder what else Microsoft forgot to tell us!)
You can put this all together in one calculation, which creates a text version.
="Age is "&DATEDIF(C2,TODAY(),"y")&" Years, "&DATEDIF(C2,TODAY(),"ym")&" Months and "&DATEDIF(C2,TODAY(),"md")&" Days"
Another way to calculate age
This method gives you an age which may potentially have decimal places representing the months.
If the age is 20.5, the .5 represents 6 months.
=(TODAY()-C2)/365.25
