By using the Highlight Cells Rules, you can highlight duplicate cells in your Excel worksheet to avoid confusion and mistakes.

Microsoft Excel is perhaps the most powerful spreadsheet application you can buy. But it also has some simple functions, like finding duplicates in data.

Likewise, discrepancies in Excel may also arise due to input errors like space after a value, uppercase or lowercase letters, duplicate entries, or inconsistent data formatting.

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Creating a list of duplicate values that’s separate from the data source is easier than ever thanks to Microsoft Excel's FILTER() function.

If you want duplicate values to stand out in an Excel spreadsheet, you can choose between two conditional formatting rules.

Type the list of words you want to duplicate in the List Entries box, pressing "Enter" after each word. Click the "Add" button to add your custom list to Excel's fill series options.