Remove Duplicates in Excel. Remove Duplicates in excel is used for removing the duplicate cells of one or multiple columns. This is very easy to implement. To remove duplicates from any column first select the column/s from where we need to remove duplicate values, then from the Data menu tab, select Remove Duplicate under data tools. Excel's built-in Remove Duplicates tool can help you get find and remove those duplicate records in one swoop. Click on any cell in your spreadsheet that contains data.
How to automatically remove duplicates form a list in Excel?
In Excel, we can use the Remove Duplicates feature to remove the same values from a list, but is there any trick to auto remove the duplicates from the list? In this article, I introduce the tricks on automatically removing duplicates if there is duplicate appearing in a specify Excel column.
Auto remove duplicates from a list by Kutools for Excel
Auto remove duplicates from a list by Data Validation
1. Click Data > Data Validation. See screenshot:
Remove Duplicates From Excel List
2. In the popping dialog, under Settings tab, select Custom form Allow list, and type this formula =COUNTIF($A$1:$A$20,A1)=1 into the Formula text box. See screenshot:
In the formula, A1:A20 is the range you want to auto remove duplicate from.
3. Click OK. And now if you type a duplicate value, a warning dialog will pop out.
Auto remove duplicates from a list by Kutools for Excel
If you are not familiar with formulas, you can apply Kutools for Excel’s Prevent Duplicate utility to stop from duplicates being typed in range at once.
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After installing Kutools for Excel, please do as below:(Free Download Kutools for Excel Now!)
Select the range or a column you want to auto remove duplicates, and then click Kutools > Prevent Typing > Prevent Duplicate. See screenshot:
Some dialogs pop out for reminding you some notices, click Yes > OK to close the dialogs.
Now a warning dialog pops out to remind you while you try to enter duplicate values.
Here is another relative utility called Prevent Typing, you can specify the character you want to prevent typing or only allow typing in a list as below screenshot show:
Tip. If you want to have a free trial of the above functions, please go to free try Kutools for Excel first, and then go to apply the operation according above steps.
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- To post as a guest, your comment is unpublished.This is not removing duplicates from a dataset, it's preventing duplicates from being added. Misleading.