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How do I create formula to calc difference in dates?
Hi I'm hoping someone can point me in the right direction. I tried the
formula listed here and a few others and I can seem to get the right result. I need a column to calculate age. I have todays date in G17 and the DOB in G3. "T. Valko" wrote: Try this: E16 = start date F16 = end date =SUMPRODUCT(--(DAY(ROW(INDIRECT(E16&":"&F16)))=20)) That will count how many 20th of the months there are from a start date to an end date (inclusive). -- Biff Microsoft Excel MVP "VSlaybaugh" wrote in message ... I have tried this function but am having trouble with it returning the right value. I have an end-date of 1/20/2010 (in cell F16) and a start-date of 2/11/2009 (in cell E16). I'm trying to calculate how many automatic monthly transfers there will be on the 20th of each month but the function is returning a value of 11 when it should return a value of 12. The first transfer will be 2/20/2009 and the last transfer will be 1/20/2010.a total of 12 transfers. "David Biddulph" wrote: I hope that Dec 2008 - Jan 2006 is 35, rather than 23. :-) An alternative to DATEDIF would be =MONTH(A1)-MONTH(B1)+12*(YEAR(A1)-YEAR(B1)) Note that if you have different dates within the start and end months, you'll get different results from the 2 formulae. End of Jan to beginning of Feb gives a 1 month difference with the original =MONTH(A1)-MONTH(B1) and with my extension thereto, but DATEDIF counts completed months (with various questions when months are of unequal length). -- David Biddulph "Ron Rosenfeld" wrote in message ... On Sun, 30 Dec 2007 18:37:01 -0800, Mike wrote: =MONTH(A1)-MONTH(B1) That works when the two months are in the same year, but what if they are in different years? For example January 2008-September 2007 = -8, but should equal 4. Or December 2008-January 2006 = 11, but should equal 23. Use the undocumented DATEDIF function: =DATEDIF(B1,A1,"m") (The first date must be the earlier date). See http://www.cpearson.com/Excel/datedif.aspx for documentation. --ron |
#22
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How do I create formula to calc difference in dates?
=DATEDIF(G3,G17,"y") & "years," & DATEDIF(G3,G17,"ym") & "months,"&
DATEDIF(G3,G17,"md") & "days," For more help on the undocumented DATEDIF function see Chip Pearson's site. http://www.cpearson.com/excel/datedif.aspx Gord Dibben MS Excel MVP On Wed, 12 May 2010 13:43:01 -0700, C wrote: Hi I'm hoping someone can point me in the right direction. I tried the formula listed here and a few others and I can seem to get the right result. I need a column to calculate age. I have todays date in G17 and the DOB in G3. "T. Valko" wrote: Try this: E16 = start date F16 = end date =SUMPRODUCT(--(DAY(ROW(INDIRECT(E16&":"&F16)))=20)) That will count how many 20th of the months there are from a start date to an end date (inclusive). -- Biff Microsoft Excel MVP "VSlaybaugh" wrote in message ... I have tried this function but am having trouble with it returning the right value. I have an end-date of 1/20/2010 (in cell F16) and a start-date of 2/11/2009 (in cell E16). I'm trying to calculate how many automatic monthly transfers there will be on the 20th of each month but the function is returning a value of 11 when it should return a value of 12. The first transfer will be 2/20/2009 and the last transfer will be 1/20/2010.a total of 12 transfers. "David Biddulph" wrote: I hope that Dec 2008 - Jan 2006 is 35, rather than 23. :-) An alternative to DATEDIF would be =MONTH(A1)-MONTH(B1)+12*(YEAR(A1)-YEAR(B1)) Note that if you have different dates within the start and end months, you'll get different results from the 2 formulae. End of Jan to beginning of Feb gives a 1 month difference with the original =MONTH(A1)-MONTH(B1) and with my extension thereto, but DATEDIF counts completed months (with various questions when months are of unequal length). -- David Biddulph "Ron Rosenfeld" wrote in message ... On Sun, 30 Dec 2007 18:37:01 -0800, Mike wrote: =MONTH(A1)-MONTH(B1) That works when the two months are in the same year, but what if they are in different years? For example January 2008-September 2007 = -8, but should equal 4. Or December 2008-January 2006 = 11, but should equal 23. Use the undocumented DATEDIF function: =DATEDIF(B1,A1,"m") (The first date must be the earlier date). See http://www.cpearson.com/Excel/datedif.aspx for documentation. --ron |
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