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.
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7 Microsoft Excel tricks you probably didn't know

Press Ctrl+; to insert the current date. Press Ctrl+Shift+; to insert the current time. Press Ctrl+; > Space > Ctrl+Shift+; ...

How cells change their minds and save their work in progress

All cells need to sense and respond to their environment, to know when to activate genes, build proteins, and carry out their ...
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Stop using IFERROR and ISERROR in Excel: Use IFNA instead

Many Excel spreadsheets use the IFERROR function to handle errors, but this masks critical structural and data issues.

5 Hidden Excel Function Ideas for Cleaner, Quicker Sheets

Five hidden Excel rules show helper columns, LET, and LAMBDA in action, cutting errors and making updates quick for any ...