XL2000: Sample Macro to Determine If a Year Is a Leap Year

In Microsoft Excel, you can determine whether a date occurs during a leap year by using a Microsoft Visual Basic for Applications macro.

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Sample Macro to Determine If a Year is a Leap Year

For more information about how to use the sample code in this article, click the article number below to view the article in the Microsoft Knowledge Base:

1. Close and save any open workbooks, and then open a new workbook.
2. Type a date in cell A1, such as 1/12/1736.
3. Start the Visual Basic Editor (press ALT+F11).
4. On the Insert menu, click Module.
5. Type or paste the following procedure in the Code window for Module1:

   Sub LeapYearTest()
       Dim x As Boolean
       Dim z As Integer
   
         z = Year(Range("A1").Value)
         x = False
         If z Mod 4 = 0 And z Mod 100 > 0 Then x = True
         If z Mod 400 = 0 Then x = True
   
         If x Then
            MsgBox z & (" is a Leap Year")
         Else
            MsgBox z & (" is not a Leap Year")
         End If
      End Sub
   					

6. On the File menu, click Close and Return to Microsoft Excel.
7. On the Tools menu, point to Macro, and then click Macros. In the Macros dialog box, click LeapYearTest, and then click Run.

NOTE: If you use this macro with the date 1/1/1900, the macro returns the year 1899 instead. This only happens with a date of January 1, 1900. For additional information about this issue, click the article number below to view the article in the Microsoft Knowledge Base:

For additional information about leap years, click the article number below to view the article in the Microsoft Knowledge Base: