Remove duplicates in CSV

With the ‘CSV remove duplicate rows’ tool, you can remove all the duplicate rows in your CSV file with just one click and only keep one unique row.

Remove duplicates in CSV

Why should we remove duplicate rows in Excel?

Duplicate data can be a problem for anyone working with large datasets in Excel. Not only does it take up unnecessary space, but it can also lead to confusion and errors in analysis. Fortunately, there are a few different ways to remove duplicates in Excel, depending on your specific needs. Here's a step-by-step guide on how to do it.

How to remove duplicate rows using QuickTran?

• Upload the Excel file that you want to remove duplicate rows.
• Click the Remove Duplicate rows button.
• Wait until the removal is complete.
• Download the result file.

How to remove duplicate rows using Excel formulas?

Use the COUNTIF formula

If you want to remove duplicates based on specific criteria, you can use the COUNTIF function to identify and remove them. Here's how:

• In a new column, enter the COUNTIF function for each row in the data you want to deduplicate. For example, if you want to deduplicate based on the values in column A, you might enter "=COUNTIF(A:A, A1)" for the first row, "=COUNTIF(A:A, A2)" for the second row, and so on.
• The COUNTIF function will return a value of 1 for rows that do not have any duplicates and a value greater than 1 for rows that have duplicates.
• Use the filter function to filter out rows with a COUNTIF value greater than 1.
• Delete the filtered rows to remove the duplicates.

Use the SUMPRODUCT function

Using the SUMPRODUCT function is a method for eliminating duplicates based on specific criteria. Here are the steps to follow:

• In a new column, apply the SUMPRODUCT function to each row of the data that you want to deduplicate. For example, if you want to deduplicate based on column A, you can enter "=SUMPRODUCT((A:A=A1)(B:B))" for the first row, "=SUMPRODUCT((A:A=A2)(B:B))" for the second row, and so forth.
• The SUMPRODUCT function will return a value of 0 for rows without duplicates and a value greater than 0 for rows with duplicates.
• Use the filter function to remove rows with a SUMPRODUCT value greater than 0.
• Delete the filtered rows to get rid of the duplicates.