I have an excell spreadsheet that does this in two ways....
1) =A2-A1 then format the cell to custom typing in yy " years, " mm "
months, " dd " days"
OR
2) =DATEDIF(A2,B2,"y") & " years, " & DATEDIF(A2,B2,"ym") & " months, " &
DATEDIF(A2,B2,"md") & " days"

My problem is that now I need to total all of those results into a TOTAL
YEARS SPENT

"lampatmyfeet" wrote:

I need to compute the number of years, months and days between dates. After
doing so: if days = 15 then add 1 to month and days becomes 0, then if
months 9 add 1 to year and then months becomes 0.

I will need to do this for several rows and them sum up the individual columns

My format is as follows:

A B C D E F G
Date 1 thru Date 2 = yy mm dd
Date 3 thru Date 4 = yy mm dd
.
.
.
TOTAL YY MM DD

the numbers is columns E,F & G are the differances between dates 2 and 1
Date X is formated at follows mm/dd/yyyy

I have tried several formulas but seem to leave out some component. My
latest iteration for computing years is
=YEAR(C9)-YEAR(A9)-IF(OR(MONTH(C9)<MONTH(A9),AND(MONTH(C9)=MONTH(A9), DAY(C9)<DAY(A9))),1,0)&""
but this formula will not allow me to total the column and the problem is
the same for the months and day columns.

Any help?
--
LAMP