XL: Visual Basic Macro to Convert Number to a Different Base

ID: Q135635


The information in this article applies to:
  • Microsoft Excel for Windows, versions 5.0, 5.0c
  • Microsoft Excel for Windows NT, version 5.0
  • Microsoft Excel for the Macintosh, versions 5.0, 5.0a
  • Microsoft Excel for Windows 95, versions 7.0, 7.0a
  • Microsoft Excel 97 for Windows
  • Microsoft Excel 98 Macintosh Edition


SUMMARY

This article contains a sample Microsoft Visual Basic for Applications function that converts an integer number to any base less than 10.


MORE INFORMATION

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http://www.microsoft.com/support/supportnet/overview/overview.asp
Following is a sample function called "baseconv" that takes two arguments. The first argument, InputNum, is an integer number to be converted. The second argument, BaseNum, is the number of the base to convert InputNum to.

Sample Visual Basic Procedure


      Function baseconv(InputNum, BaseNum)

      Dim quotient, remainder As Single
      Dim answer As String
      quotient = InputNum   ' Set quotient to number to convert.
      remainder = InputNum  ' Set remainder to number to convert.
      answer = ""

      Do While quotient <> 0   ' Loop while quotient is not zero.

         ' Store the remainder of the quotient divided by base number in a
         ' variable called remainder.
         remainder = quotient Mod BaseNum

         ' Reset quotient variable to the integer value of the quotient
         ' divided by base number.
         quotient = Int(quotient / BaseNum)

         ' Reset answer to contain remainder and the previous answer.
         answer = remainder & answer

      Loop
      baseconv = Val(answer)   ' Convert answer variable to a number.

   End Function 
The function should be typed in a worksheet cell as follows:

   =baseconv(InputNum, BaseNum) 
For example, the following call to the baseconv function:

   =baseconv(100,2) 
returns the following value in the cell:
1100100


REFERENCES

Microsoft Excel for Windows 95

For more information about user-defined functions, click the Index tab in Microsoft Excel Help, type the following text
user-defined functions
and then double-click the selected text to go to the "Writing a Function procedure" topic.

Microsoft Excel version 5.0

"Visual Basic User's Guide," version 5.0, Chapter 12, "Creating User- Defined Functions"

For more information about user-defined functions, click the Search button in Microsoft Excel Help and type:
user-defined functions
For information about how to do this in earlier versions of Microsoft Excel, please see the following article in the Microsoft Knowledge Base:
Q69777 Macro to Convert Decimal Number to a Different Base

Additional query words: 5.00a 5.00c 8.00 97 98 XL98 XL97 XL7 XL5 custom

Keywords : kbprg kbdta kbdtacode PgmHowto xlformula KbVBA
Version : MACINTOSH:5.0,5.0a,98; WINDOWS:5.0,5.0c,7.0,7.0a,97; winnt:5.0
Platform : MACINTOSH WINDOWS winnt
Issue type : kbhowto


Last Reviewed: November 9, 1999
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