Can not be done. Your version of Excel has a fixed maximum number of columns available. However, if you just want to include more available columns in an existing worksheet, just insert columns, as needed.
It's been a while since I used Excel 2003 but I believe there are a maximum of 256 available columns.
There are 256 Columns and 65536 Rows in Excel 2003.
That depends on the version. In Excel 2000 and Excel 2003, the maximum is 256 columns and 65,536 rows. For Excel 2007, the limit is 16,384 columns and 1,048,576 rows.
Colums : 16384 Rows : 1048576
Upgrade to Excel 2007 or higher. There is no way to increase the number of columns designed into the spreadsheet. Excel 2003 and earlier have a limit of 256 columns. Excel 2007 and higher has increased that to 16,000 columns.
The total number of columns in versions of Excel up to Excel 2003 is 256 columns. The total number of columns in Microsoft Excel 2007 and onwards is 16384. The total number of rows up to Excel 2003 is 65536. From Excel 2007 it is 1048576.
Since Excel 2007, continuing to Excel 2016, the maximum number of rows per worksheet is now 1,048,576 and the number of columns is 16,384. That makes 17,179,869,184 cells.
No you cannot. 63 is the maximum number of columns for a table created in Word. If you require more than that, use Excel instead.
In Excel 2010 the number of rows per worksheet is 1,048,576 and the number of columns is 16,384 which is column XFD. That makes 17,179,869,184 cells.
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The number of columns on an Microsoft Excel Sheet varies depending on the version of operating software. For the 2007 and 2010 versions the number of columns available is 16,384 while other versions only 256.