How to grey out unused cells in Excel

This guide describes how to grey out unused cells in Excel in Windows 11/10, apply a solid fill color, use Conditional Formatting, or hide unused rows/columns.

Think you're a spreadsheet wizard? You ain't seen nothing 'til you've watched the Excel World Championships — here's how

The Microsoft Excel World Championships 2025 just concluded in Las Vegas and a new lord of the spreadsheets has been crowned.
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7 Microsoft Excel tricks you probably didn't know

Press Ctrl+; > Space > Ctrl+Shift+; to insert the current date and time together in the same cell. The FBI arrested a suspect ...
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I use these 7 Excel shortcuts to find and fix spreadsheet errors in seconds

Instead of selecting all errors, press F5 > Alt+S > C > Enter to highlight all constants—numbers, text, and symbols that aren ...