Select the columns you want to fix. In this case we’re selecting the header columns — those at the very top of the ...

Clicking "AutoFit Column Width" forces Excel to adjust the width of the columns you selected so that they are wide enough to display their contents. Every Excel spreadsheet has a "Select All" button.

Can Excel show column headers on every screen? Yes, in Excel it’s called Freezing Panes, which can be applied to columns or rows (or both), and it’s super-simple.