Highlight Duplicates Using Macros In Excel

Make sure your Excel has the Developer Tab enabled following this tutorial.

I explain how you can do this below step by step!

What does it do?

Highlights all cells with duplicate values in a selected range

Copy Source Code:

</p>
<p>Sub HighlightDuplicates()</p>
<p>Dim cells As Range<br />
Dim cell As Range<br />
Set cells = selection</p>
<p>'Loop through each cell in your selected range looking for duplicates<br />
For Each cell In cells</p>
<p>'Highlight with a color of your choice,  if that cell has duplicate values<br />
If WorksheetFunction.CountIf(cells, cell.Value) &amp;gt; 1 Then<br />
cell.Interior.ColorIndex = 36<br />
End If<br />
Next cell</p>
<p>End Sub</p>
<p>

Final Result: 

Exercise Workbook:

Download excel workbookHighlight-Duplicates.xlsm

STEP 1: Go to Developer > Code > Visual Basic

STEP 2: Paste in your code and Select Save. Close the window afterwards.

STEP 3: Let us test it out! Make sure to have your cells selected.

Open the sheet containing the data. Go to Developer > Code > Macros

Make sure your macro is selected. Click Run.

With just one click, all of the duplicate cells now have been highlighted!

How to Highlight Duplicates Using Macros in Excel

Bryan

Bryan Hong is an IT Software Developer for more than 10 years and has the following certifications: Microsoft Certified Professional Developer (MCPD): Web Developer, Microsoft Certified Technology Specialist (MCTS): Windows Applications, Microsoft Certified Systems Engineer (MCSE) and Microsoft Certified Systems Administrator (MCSA).

He is also an Amazon #1 bestselling author of 4 Microsoft Excel books and a teacher of Microsoft Excel & Office at the MyExecelOnline Academy Online Course.