Thursday 1 September 2016

Formulas and Function, how to Calculate Age




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!)















Birth date :
29-Apr-73
















Years lived :
43
 =DATEDIF(C8,TODAY(),"y")





and the months :
4
 =DATEDIF(C8,TODAY(),"ym")





and the days :
3
 =DATEDIF(C8,TODAY(),"md")














You can put this all together in one calculation, which creates a text version.




Age is 43 Years, 4 Months and 3 Days







 ="Age is "&DATEDIF(C8,TODAY(),"y")&" Years, "&DATEDIF(C8,TODAY(),"ym")&" Months and "&DATEDIF(C8,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.















Birth date :
1-Jan-60
















Age is :
56.67
 =(TODAY()-C23)/365.25

























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