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## How to find duplicate values in two columns in Excel?

When we use a worksheet, sometimes we need to compare two columns and find the same values. For example, I have two long columns of student names, and now, I want to compare them and find out the same names. If I compare them cell by cell, it will be tiresome and waste a lot of time. Are there any quick ways to finish this task?

Find duplicate values in two columns with Formula

Find duplicate values in two columns with VBA code

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#### Find duplicate values in two columns with Formula

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Look at the following screenshot, I have column A (A2:A15) and column C (C2:C13) which contain some duplicate names.

By using a formula, we can compare two columns and display the duplicate values. Please do with the following steps:

1. In cell B2, input this formula: =IF(ISERROR(MATCH(A2,\$C\$2:\$C\$13,0)),"",A2).

Note: In the above formula: A2 is the column which you want to be compared. \$C\$2:\$C\$13 is the range that you want to be compared with. You can change the variables for what you are using.

2. Press the Enter key. Select cell B2, and then drag the fill handle over cell B15. And all of the duplicate names will be displayed in column B. See screenshot:

#### Find duplicate values in two columns with VBA code

The following VBA code can also help you to find out the duplicate values between two columns.

1. Click Developer > Visual Basic, a new Microsoft Visual Basic for applications window will be displayed, click Insert > Module, and input the following code into the Module:

VBA code: find duplicates from two columns

```Sub Compare()
Dim Range1 As Range, Range2 As Range, Rng1 As Range, Rng2 As Range, outRng As Range
xTitleId = "KutoolsforExcel"
Set Range1 = Application.Selection
Set Range1 = Application.InputBox("Range1 :", xTitleId, Range1.Address, Type:=8)
Set Range2 = Application.InputBox("Range2:", xTitleId, Type:=8)
Application.ScreenUpdating = False
For Each Rng1 In Range1
xValue = Rng1.Value
For Each Rng2 In Range2
If xValue = Rng2.Value Then
If outRng Is Nothing Then
Set outRng = Rng1
Else
Set outRng = Application.Union(outRng, Rng1)
End If
End If
Next
Next
outRng.Select
Application.ScreenUpdating = True
End Sub
```

2. Click button to execute the code, in the popped out box select Range 1 that you want to compare.

3. Click OK and go on selecting Range 2 that you will be compared with.

4. Then click OK, and the duplicate values both in column A and column C have been selected in column A.

Note: If you want to select the duplicates from column C, you just need to swap the two selected columns.

#### Quickly find duplicate values in two columns with Kutools for Excel

With the help of Kutools for Excel, you can find the duplicate values quickly and comfortably.

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After installing Kutools for Excel, please do as below:

Click Kutools > Select > Select Same & Different Cells.

1. In the Select Same & Different Cells dialog box, do the following operations:

(1.) Click the first button to select the source column to be compared, then click the second button to select the column you are compared with;

(2.) Choose Each row under the Based on section;

(3.) Then select Same Values fromt he Find section;

(4.) At last, you can choose one background or font color to highlight the same cells under the Processing of resuts section as you need.

2. Then click OK, and the same values both in column A and column B have been selected in column A.

With this utility, you can also find the different values between two columns.

Notes:

• My data has headers: If the data you are compared has headers, you can check this option, and the headers will not be compared.
• Select entire rows: With this option, the entire rows which contain the same values will be selected.
• Case Sensitive: Checking this option, you will compare the columns with case sensitive.
• The two comparing ranges must contain the same number of columns.
• If you want to select the duplicates from column C, you just need to swap the two selected columns.

#### Quickly find duplicate values in one column with Kutools for Excel

After installing Kutools for Excel, please do as below:

Sometimes, you may want to find the duplicate values in a column, the Kutools for Excel also can help you quickly handle it.

1. Select the column you want to find duplicate values, click Kutools > Select > Select Duplicate & Unique Cells.

2. In the Select Duplicate & Unique Cells dialog, check Duplicates or All duplicates option as you need, and at the same time, you can decide to highlight the duplicates with background or font color or not in Processing of results section.

3. Click Ok, a dialog pops out to remind you the number of selected duplicate cells, click OK to close it, and the duplicates are selected and highlighted.

Related Article:

How to find unique values between two columns in excel?

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###### or post as a guest, but your post won't be published automatically.
• To post as a guest, your comment is unpublished.
· 4 years ago
I get a bunch of TRUE and FALSE, not the actual Number
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· 4 years ago
Thaanks a lot..it worked!!!
Initially it didn't work for me. I followed Stby 's suggestion and it worked..
• To post as a guest, your comment is unpublished.
· 4 years ago
Sadly, this didn't work for me. I have literally copied and pasted the formula, so I don't know why it didn't work.

I have experimented with making my data text, numbers, or general.

All I get is the formula displayed. The formula actually isn't performing its function.
• To post as a guest, your comment is unpublished.
· 2 years ago
You can also use the Match function.

Make sure to put your headers so you can also sort after
In column A you have 1 list and in column C your 2nd list
In B2 use Match(A:A,C:C,0) hit enter.. it won't work if your items aren't matching in what they are, like a number to a number thing
Then using your filter function uncheck everything except the N/A in the 2nd column and you will see what isn't in the 1st.. easily knowing what didn't have matches and what did. You can do it both ways so just reverse the C and A in the above formula and see what isn't in A that is in C.. It works great for really long lists, then you don't have to continually scroll for those with and without matches.
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· 4 years ago
Suggestion to Ian - when copy/pasting from a website to Excel, first copy to Notebook and then to Excel. Sometimes the formatting of the text in the website is what is screwing it up, by sending it through Notebook first you are removing any and all formatting.
~Stby
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· 4 years ago
I did this, but it still will not work. If I find a duplicate on my own and cut & paste that cell from column c to a. THEN the formula Shows me. ALL cells are Formatted the same. Why is it doing that?
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· 4 years ago
It works perfect here. You might need to change the , to ; if you havent already done that :)
• To post as a guest, your comment is unpublished.
· 4 years ago
[quote name="Ian"]Sadly, this didn't work for me. I have literally copied and pasted the formula, so I don't know why it didn't work.

I have experimented with making my data text, numbers, or general.

All I get is the formula displayed. The formula actually isn't performing its function.[/quote]

Rename(F2) the cell and press enter again for the formula to register.

Note:remove the . at the end of the formula if there is an error
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· 4 years ago
I had the same problem (only formula displaying) and F2 fixed it. Thanks, this is such a time saving and brilliant solution.
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· 4 years ago
Saved me a lot of time. Great work.

Thanks a lot for your blog post.
• To post as a guest, your comment is unpublished.
· 5 years ago
YOU MAGNIFICENT NERD YOU! I've been looking all over and every other tutorial sucks or doesn't understand that this is what people are trying to do. THANK YOU SO MUCH! And Happy Halloween! Keep up the great work!