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How to Find and Highlight Duplicates in Google Sheets

Updated: Jan 30, 2023

Duplicates can be a problem when working with data. There are many ways to find and highlight duplicates in Google sheets, but the most effective way is with conditional formatting.


To highlight duplicates in google sheets, there are two steps:

  1. Highlight column with duplicates. In the example below B4:B15

  2. Select "custom formula is" and add =COUNTIF($B$4:B,B4)>1

  3. Change color within the formatting style section


See how it can be done in the video here.

Try it yourself now!


Click here to copy paste the Google Sheet spreadsheet in the video.

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