I recommend separating columns with some Separator (such as the _) as otherwise you may again get False Positive Duplicates 2. =IF(COUNTIF(B$1:B1 "="&B2) "DUPLICATE" "")ĭrag the COUNTIF Formula from the First Cell down to the Last. In our example assuming that the Last column uniquely identifies records in my table input the following formula in the first cell of your new Is Duplicate? Column: Add COUNTIF Excel Formula to Find Duplicates Excel Formula: Add Is Duplicate? Column to your WorksheetĪdd a Is Duplicate? Column to your Worksheet.
#Excel formula to remove duplicates in two columns how to
Scroll down to the end to learn how to check for duplicates based on all three columns. This will work only on a single column (our unique column identifier). To Find Duplicates in Excel using Formulas we will use the COUNTIF Excel formula to verify if a certain row as been repeated above. Highlight using Conditional Formattingįollowing today’s post we will use the example Excel Table on the right. Note: visit our page about removing duplicates to learn more about this great Excel tool.COUNT DUPLICATES Find Duplicates in ExcelĮxample Table with DuplicatesThere are several ways to go around Finding or Highlighting duplicates in Excel: In the example below, Excel removes all identical rows (blue) except for the first identical row found (yellow). On the Data tab, in the Data Tools group, click Remove Duplicates. Finally, you can use the Remove Duplicates tool in Excel to quickly remove duplicate rows. As a result, cell A1, B1 and C1 contain the same formula, cell A2, B2 and C2 contain the formula =COUNTIFS(Animals,$A2,Continents,$B2,Countries,$C2)>1, etc.ħ. We fixed the reference to each column by placing a $ symbol in front of the column letter ($A1, $B1 and $C1).
Excel automatically copies the formula to the other cells. Always write the formula for the upper-left cell in the selected range (A1:C10). Excel highlights the duplicate rows.Įxplanation: if COUNTIFS(Animals,$A1,Continents,$B1,Countries,$C1) > 1, in other words, if there are multiple (Leopard, Africa, Zambia) rows, Excel formats cell A1. =COUNTIFS(Animals,$A1,Continents,$B1,Countries,$C1) counts the number of rows based on multiple criteria (Leopard, Africa, Zambia). Note: the named range Animals refers to the range A1:A10, the named range Continents refers to the range B1:B10 and the named range Countries refers to the range C1:C10. Enter the formula =COUNTIFS(Animals,$A1,Continents,$B1,Countries,$C1)>1Ħ.
Select 'Use a formula to determine which cells to format'.ĥ. To find and highlight duplicate rows in Excel, use COUNTIFS (with the letter S at the end) instead of COUNTIF.Ĥ. For example, use this formula =COUNTIF($A$1:$C$10,A1)>3 to highlight names that occur more than 3 times. Notice how we created an absolute reference ($A$1:$C$10) to fix this reference. Excel highlights the triplicate names.Įxplanation: = COUNTIF($A$1:$C$10,A1) counts the number of names in the range A1:C10 that are equal to the name in cell A1. Select 'Use a formula to determine which cells to format'.Ħ. On the Home tab, in the Styles group, click Conditional Formatting.ĥ. First, clear the previous conditional formatting rule.ģ. Execute the following steps to highlight triplicates only.ġ. Triplicatesīy default, Excel highlights duplicates (Juliet, Delta), triplicates (Sierra), etc. Note: select Unique from the first drop-down list to highlight the unique names. Click Highlight Cells Rules, Duplicate Values.Ĥ. On the Home tab, in the Styles group, click Conditional Formatting.ģ.
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