WD97: Macro to Calculate Number of Months between Two Dates

MORE INFORMATION

Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs. If you have limited programming experience, you may want to contact a Microsoft Certified Partner or the Microsoft fee-based consulting line at (800) 936-5200. For more information about Microsoft Certified Partners, please visit the following Microsoft Web site: For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site: The following sample Visual Basic for Applications macro calculates the number of months between 1/23/1993 and 11/2/1993:

   Sub Date_MonthsBetweenDates()
      Dim dBeginDate As Date
      Dim dEndDate As Date
      Dim intMonths As Integer
      ' Beginning date.
      dBeginDate = DateValue("1/1/1993")
      ' Ending Date.
      dEndDate = DateValue("2/1/1993")
      ' Calculate number of months between dates.
      intMonths = ((Year(dEndDate) - Year(dBeginDate)) * 12) + _
         Month(dEndDate) - Month(dBeginDate)
      ' Display number of months.
      MsgBox Str$(intMonths) & " month(s)"
   End Sub
				

NOTE: The number of months returned by this macro is not based on the exact number of days between the two dates. For example, given a start date of 10/31/1993 and an end date of 11/2/1993, the macro returns one month.

For additional information, please see the following article in the Microsoft Knowledge Base: