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How to conditional formatting duplicate cells in a column in Google sheet?

Author Xiaoyang Last modified

In Excel, the Conditional Formatting feature can help you to highlight duplicate values quickly and easily. But, how could you highlight the duplicate cells in a column in Google sheet?

Conditional formatting duplicate cells in a column in Google sheet

Highlight duplicate cells in a column in Excel worksheet with Kutools for Excel


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There is also a Conditional formatting feature in Google sheet, with it, you can highlight the duplicate cells at once, please do as follows:

1. Click Format > Conditional formatting, see screenshot:

Click Format > Conditional formatting

2. In the Conditional format rules pane, please do the following operations:

(1.) Select the column data that you want to highlight the duplicate values in the Apply to range text box;

(2.) In the Format cells if section, choose Custom formula is from the drop down list, and enter this formula: =countif(A:A,A1)>1 into the text box;

(3.) At last, select a formatting from the Formatting style section.

(4.) Then, you can see all the duplicate cells have been highlighted at once.

specify the options in the dialog box


Highlight duplicate cells in a column in Excel worksheet with Kutools for Excel

To highlight duplicate cells in Excel workbook, the Kutools for Excel’s Select Duplictae & Unique Cells utility can help you to solve this job.

Kutools for Excel offers over 300 advanced features to streamline complex tasks, boosting creativity and efficiency. Itegarate with AI capabilities, Kutools automates tasks with precision, making data management effortless. Detailed information of Kutools for Excel...         Free trial...

After installing Kutools for Excel, please do as follows:

1. Select the column data that you want to highlight duplicates, and then click Kutools > Select > Select Duplictae & Unique Cells, see screenshot:

click Select Duplictae & Unique Cells feature of kutools

2. In the Select Duplicate & Unique Cells dialog box, select Duplicate (Except 1st one) or All duplicates (Including 1st one) as you need in the Rule section, then choose one background color under the Processing of results section to shade the duplicate cells, and then, click Ok button, and all duplicate cells have been highlighted as following screenshot shown:

specify options and highlight all duplicate cells

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