There are a few ways to change the width of a column in Excel. The easiest way is to select the column you want to change and then use the mouse to drag the column border to the desired width. You can also use the mouse to double-click on the column border to automatically adjust the column width to the widest entry in the column.

If you want to set a specific width for a column, you can use the "Column Width" option under the "Format" menu. This will bring up a dialog box where you can enter the desired width in pixels.

Finally, you can use the "Width" property to change the width of a column programmatically. This can be useful if you want to automate the process of adjusting column widths.