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Excel Highlight Duplicates

By Madhuri ThakurMadhuri Thakur

Highlight Duplicates in Excel

Highlight Duplicates (Table of Contents)

  • Highlight Duplicates in Excel
  • How to Highlight Duplicate Values in Excel?
    • Conditional Formatting- Duplicate Values Rule
    • Conditional Formatting – Using Excel Function or Custom Formula (COUNTIF)

Highlight Duplicates in Excel

We can highlight the duplicate values in the selected dataset, whether it is a column or row of a table, from Highlight Cells Rule, which is available in Conditional Formatting under the Home menu tab. To highlight the duplicates, select the data from where we need to highlight the duplicates, then select the Duplicate Values option, which is there under Conditional Formatting. From the box of Duplicate Values, choose Duplicate with the type of color formatting we want. Mostly Red text is selected by default to highlight duplicates.

There are various ways to find duplicate values in excel. They are:

  • Conditional Formatting – Using Duplicate Values Rule
  • Conditional Formatting – Using Excel Function or Custom Formula (COUNTIF)

How to Highlight Duplicate Values in Excel?

Highlighting Duplicate Values in Excel is very simple and easy. Let’s understand the working of finding and highlighting duplicate values in excel by using two methods.

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You can download this Highlight Duplicates Excel Template here – Highlight Duplicates Excel Template

Conditional Formatting – Duplicate Values Rule

Here we will find the duplicate values in excel using the conditional formatting feature and will highlight those values. Let’s take an example to understand this process.

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Example #1

We have given the below dataset.

Example 1

For highlighting the duplicate values in the above dataset, follow below steps:

  • Select the entire dataset.
  • Go to the HOME tab.
  • Click on the Conditional Formatting option under the Styles section, as shown in the below screenshot.

Click on Conditional Formatting

  • It will open a drop-down list of formatting options, as shown below.

Drop down list

  • Click on Highlight Cells Rules here, and it will again display a list of rules here. Choose the Duplicate Values option here.

Highlight Cells Rules

  • It will open a dialog box of Duplicate Values, as shown in the below screenshot.

Excel Highlight Duplicates Example 1-5

  • Select the color from the color palette for highlighting the cells.

Excel Highlight Duplicates Example 1-6

  • It will highlight all the duplicate values in the given data set. The result is shown below.

Result of Example 1

With the highlighted duplicate values, we can take action accordingly.

In the upper section, we highlighted the cells with conditional formatting inbuilt feature. We can also do this method by using an Excel function.

Conditional Formatting – Using Excel Function or Custom Formula (COUNTIF)

We will use here COUNTIF function. Let’s take an example to understand this method.

Example #2

Let’s again take the same dataset values for finding the duplicate values in excel.

Example 2

For highlighting the duplicate values here, we will use the COUNTIF function here that returns TRUE if a value appears more than once in the list.

The COUNTIF function, we will use like shown below:

=COUNTIF(Cell range, Starting cell address)>1

Follow the below steps to do this.

  • Select the whole dataset.
  • Go to the HOME tab and click on the Conditional Formatting option.

Excel Highlight Duplicates Example 2-2

  • It will open a drop-down list of formatting options, as shown below.

Excel Highlight Duplicates Example 2-3

  • Click on the New Rule option here. Refer to the below screenshot.

Excel Highlight Duplicates Example 2-4

  • It will open a dialog box for creating a new custom rule here, as we can see below.

Excel Highlight Duplicates Example 2-5

  • Select the last option, “Use a formula determining which cells to format”, under the Select a Rule Type section.

Excel Highlight Duplicates Example 2-6

  • It will display a formula window, as shown below.

Excel Highlight Duplicates Example 2-7

  • Enter the formula as =countif($A$3:$F$12,A3)>1 then click on the Format tab.

Excel Highlight Duplicates Example 2-8

  • Choose the Fill color from the color palette for highlighting the cells, and then click on OK.

Excel Highlight Duplicates Example 2-9

  • This will highlight all the cells having duplicate values in the dataset. The result is shown below:

Result of Example 2

Things to Remember about Excel Highlight Duplicate Values

  • Finding and highlighting the duplicate values in excel often comes into use while managing attendance sheets, address directories, or other related documents.
  • After highlighting duplicate values, if you are deleting those records, be extra cautious about impacting your entire dataset.

Recommended Articles

This has been a guide to Highlight Duplicates in Excel. Here we discuss how to highlight duplicate values in excel by using two methods: practical examples and a downloadable excel template. You can also go through our other suggested articles –

  1. Goal Seek in Excel
  2. Tables in Excel
  3. Excel Combo Box
  4. Scrollbar in Excel
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