=IF(COUNTIF(B$1:B1 "="&B2) "DUPLICATE" "")ĭrag the COUNTIF Formula from the First Cell down to the Last. In our example assuming that the Last column uniquely identifies records in my table input the following formula in the first cell of your new Is Duplicate? Column: Add COUNTIF Excel Formula to Find Duplicates Excel Formula: Add Is Duplicate? Column to your WorksheetĪdd a Is Duplicate? Column to your Worksheet. Scroll down to the end to learn how to check for duplicates based on all three columns. This will work only on a single column (our unique column identifier). To Find Duplicates in Excel using Formulas we will use the COUNTIF Excel formula to verify if a certain row as been repeated above. Highlight using Conditional Formattingįollowing today’s post we will use the example Excel Table on the right. COUNT DUPLICATES Find Duplicates in ExcelĮxample Table with DuplicatesThere are several ways to go around Finding or Highlighting duplicates in Excel:
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