INDEX-MATCH with Duplicate Values in Excel (3 Quick Methods)


Method 1 – Finding Duplicate Values in Excel with INDEX, MATCH, IF, and COUNTIF

We have input some salespersons’ states and sales in the dataset. Now we’ll find duplicate values. If no duplicate is found, then the formula will show “Original” and if there is any duplicate then it will show “Duplicate”.

Duplicate Values with INDEX, MATCH, IF, and COUNTIF


  • Select Cell E5
  • Copy the following formula into it:
=IF(COUNTIF($C$5:C6,C5)>1,"Duplicate of "&INDEX($B$5:B6,MATCH(C5,$C$5:C6,0)),"Original")
  • Hit Enter to get the output.

Index Match Functions for Duplicate Values in Excel

  • Double-click the Fill Handle icon (bottom-right corner of the cell) to copy the formula for the other cells.

Index Match for Duplicate Values in Excel

  • You will see whether duplicates exist in the dataset.

 💡 Formula Breakdown:


The MATCH function finds the first occurrence of a value in a stack of values and returns the relative row number where the value is found. So it returns as-



The INDEX formula returns a value from a specified row of a specified stack of cells. Like, INDEX(B1:B10,5) would return the 5th value in the range B1:B10. From our array it will return as-



The COUNTIF function will look at all the states so far and counts up how many times the current value has occurred.  If Excel sees the current value for the first time, the formula returns 1. And as 1 is not greater than 1, so it will show-


IF(COUNTIF($C$5:C6,C5)>1,”Duplicate of “&INDEX($B$5:B6,MATCH(C5,$C$5:C6,0)),”Original”)

Finally, the IF function will show “Original” for FALSE and Duplicates for TRUE. So it returns-


Method 2 – Joining Excel INDEX, ROW, and SMALL Functions for Duplicate Values

Let’s find the duplicate values of a single given cell (in this case, a state) and list the sales amounts for it.


  • In Cell C16, insert this formula:


We have defined array and reference names that will be used in the formula for easier overview:

Sales= D5:D11
State= C5:C11
StateName= C13

  • Hit Enter.

Duplicate Values with INDEX, ROW, and SMALL

  • Copy the formula down with the Fill Handle tool.

Formula Breakdown:


The INDEX function will return the value according to its relative row number 1 and column number 1. That is-



Then the ROW function will find its original row number-



As the upcoming INDEX function works for row number of a particular array, not for Excel row number, we have to give the INDEX function the row numbers by applying this formula. The output is-



Then the IF function will do the logic test for the value “Alaska”. If found then it will show the position number whether it will show FALSE and that will return as-



The SMALL function will show the lowest number among them which is-



The INDEX function will extract the value according to the output of the SMALL function, that returns-


Method 3 – Extracting Values Based on Duplicates in Two Columns with INDEX-MATCH

Let’s extract the sales values for the states of Florida and Alabama.


  • Copy the formula given below in Cell C14:
=INDEX(C5:D11, MATCH($B14,C5:C11,0),2)
  • Hit Enter to get the result.

Duplicates in Two Columns with INDEX+MATCH

  • Use the Fill Handle tool to copy the formula to the cell below.

Formula Breakdown:


The MATCH function will find the relative position for the state “Florida” from the state column, which returns-


INDEX(C5:D11, MATCH($B14,C5:C11,0),2)

Finally, the INDEX function will extract the sales value according to row number 4 and column number 2 relative to the array C5:D11. That will return as-


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Md. Sourov Hossain Mithun
Md. Sourov Hossain Mithun

Md. Sourov Hossain Mithun, an Excel and VBA Content Developer at Softeko's ExcelDemy project, joined in October 2021. Holding a Naval Architecture & Marine Engineering degree from BUET, Mithun showcases expertise during his two-year tenure. With over 200 published articles on Excel topics, he earned a promotion to Team Leader, excelling in leading diverse teams. Mithun's passion extends to Advanced Excel, Excel VBA, Data Analysis, and Python programming, contributing significantly to the innovative and dynamic environment of ExcelDemy... Read Full Bio

  1. Hi, nice tutorial, but I am a begginer.

    I would like to make excel table for ordinary tennis league, but if 2 teams are equal with same points than it should take into account their mutual match, so who won the match is higher ranking. So, I have 12 teams, namely:
    Team 1

    After entering the results for each round, let Excel itself sort the Teams in the following order:
    a) Team with most points is highest ranking.
    b) If 2 teams with the same nr. of points, the head-to-head is then watched and whoever won is higher ranking. If the teams have not yet played each other or have result for draw, then skip to c).
    c) If the teams are still the same, then they are judged by goal difference – higher difference is higher ranking.
    d) If the teams are still the same, then see who received fewer goals – who received less goals is higher ranking..
    e If the teams are still the same, then see who scored more goals – who scored more goals is higher ranking.
    f) If the teams are still the same, then they occupy the same ranking place.

    Here is link for demo file:

    If you have any solution / formula, pls let me know


    • Hello Mat, thanks for your feedback. The problem you mentioned will need a complex formula. You will have to apply a formula like this:

  2. Hello Mithun,
    I’m trying to do something similar but am having a difficult time applying. I hope you can help with the following:

    I have a sheet with thousands of rows representing individual books. However, multiple individual items (books) can be a part of a single title. Each item has usage numbers. Also, each row has unique key for the catalog (catalog ID) and a unique key for the item (item barcode).

    I’m looking for two formulas. One to count the number of items per title (according to catalog id). And another to sum the total item usage of all items on the same title.

    I’ve included a sample sheet to help illustrate:

    I’m looking for formulas to return the values seen in columns E and F.

    Any help will be greatly appreciated!

  3. Hello Mithun,

    You have created some great instructions! So I’m reaching out for assistance for, possibly, the second time.

    If you have already seen a comment by me today, I apologize for the duplication. I posted something earlier but there was no indication that a comment had been submitted. Given your expertise, I thought it would be worth trying again!

    I have a sheet with thousands of rows, each row with data about a single item (book). Each item has information such as number of uses and the catalog title to which that item is associated. The same catalog title can be associated with multiple items (think of a multi-volume set of books, all with the same title). Each item has a unique key (item barcode) and each title has a unique key (catalog id).

    I am looking for two formulas to help examine usage. One formula will simply count the number of items associated with each title (according to catalog id), returning that value to each row. The other formula will sum the total number of uses of each item associated with that same title, returning that value to each row.

    I’ve included an example sheet to demonstrate:

    On the example sheet, I’m looking for formulas to return the values in columns E and F.

    Any help will be most appreciated!

    • Hi MICHAEL,
      Thanks for your feedback.

      To count the number of items associated with each title (according to to catalog id), use this formula: =COUNTIF($B$2:$B$27,B2)

      And to sum the total number of uses of each item associated with that same title, use this formula: =SUMIF($B$2:$B$27,B2,$D$2:$D$27)

  4. the duplicates in the first example seem wrong. The dups are being identified by states and Michigan is marked as a duplicate, but it is not. Alabama is a duplicate, but is tagged as original.

    • Hi TOM,
      Thank you so much for letting us know. The formula has been edited. Thanks for your concern. Stay connected!

      Author: ExcelDemy Team

  5. i am preparing a result sheet
    in which there are 4 different worksheets in excel with each semester marks of all students
    in 5th worksheet i am calling the top 10 scorers from each semester
    everything was fine, i used formula
    =INDEX(‘Semester 2’!C10:C46,MATCH(LARGE(‘Semester 2′!L10:L46,4),’Semester 2’!L10:L46,0))
    but issue arose when i saw 4 and 5 has both same names
    however the names should be different
    because 2 different students scored same marks
    so this formula is calling 1st from both same scorers
    how to handle this
    else 1 to 3 and 6 to 10 are fine
    since their scores were unique

    so guide me how can i deal with students who secured same marks using such formula

    • Hello Naureen,
      Thank you for sharing your problem. I am replying on behalf of ExcelDemy. Assuming the student names are in Column A and the scores are in Column B, insert this formula to get the top 10 scorers with duplicate values.
      If you want to get the names in another sheet, then just add the worksheet names in the formula (as shown below) and you will get your required output.
      =INDEX(SORT(‘Semester 2’!A2:B16,2,-1),SEQUENCE(10),1)
      I hope this solution will help you. Otherwise, feel free to share your workbook with [email protected] and we will look into this deeply.


  6. This is great content and it looks like exactly what I need. I’m running into issues with getting it setup though. My data looks like the following. I need to search Column A for all the times that Item 1 appears and report back the results of the content in column B and C. Any help would be appreciated.

    Column A
    Item 1
    Item 1
    Item 1
    Item 2
    Item 3

    Column B
    Thing 5
    Thing 6
    Thing 7
    Thing 5
    Thing 5

    Column C
    Display 1
    Display 2
    Display 3
    Display 2
    Display 3

  7. Thank you very much!
    It helps. 🙂

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