How to extract all duplicates from a column in Excel?
If you have a column of product list, and some of them are duplicates, now you need to extract only duplicates from this list to other column, how can you solve? In general, you may find them one by one then type them manually. Now I will tell you some quick methods to extract duplicates from one column in Excel.
Extract duplicates from one column with formulas
Extract duplicates from one column with Kutools for Excel 
| Feature | Formulas | Kutools for Excel |
|---|---|---|
| Best for | Extracting duplicate values into a separate list with formulas | Quickly selecting and copying duplicate values to another location |
| Output method | Returns duplicate values directly in the formula column | Select duplicates first, then copy and paste them elsewhere |
| Unique duplicate list | Yes; the provided formula returns each duplicated value once | May include repeated duplicate entries; use Remove Duplicates afterward if needed |
| Setup complexity | Moderate to advanced | Very simple |
| Main advantage | Creates a formula-based duplicate list that can update with the source data | No complex formulas and offers flexible duplicate-selection options |
| Main limitation | Formula is relatively complex and older Excel versions require Ctrl + Shift + Enter | Requires Kutools for Excel |
| Recommended use | Users who want a dynamic formula-based list of duplicated values | Fast extraction and further processing of duplicate records |
Extract duplicates from one column with formulas
Here I introduce two formulas for you to extract duplicates.
Select a cell and type this formula=INDEX(A2:A11, MATCH(0, COUNTIF(C1:$C$1, A2:A11)+IF(COUNTIF(A2:A11, A2:A11)>1, 0, 1), 0)) into it, then press Shift + Ctrl + Enter keys. Then drag the fill handle down until #N/A appears.
Or you can use this formula =IFERROR(INDEX(A2:A11, MATCH(0, COUNTIF(C1:$C$1, A2:A11)+IF(COUNTIF(A2:A11, A2:A11)>1, 0, 1), 0)), ""), press Shift + Ctrl + Enter keys. Then drag the fill handle down until blank cell appears.
Note: In the above A2:A11 is the column range you want to extract duplicates from, and C1 is the first cell of the column where your formula is typed in.
Extract duplicates from one column with Kutools for Excel
Formulas may be difficult to remember to use, but if you have Kutools for Excel’s Select Duplicate & Unique Cells, you can quickly select the duplicate cells and then copy and paste them to another column.
After free installing Kutools for Excel, please do as below:
1. Select the column list exclude the header if you have the header, click Kutools > Select > Select Duplicate & Unique Cells. See screenshot:
2. In Select Duplicate & Unique Cells dialog, check Duplicates (Except 1st one) or All duplicates (Including 1st one) as you need. Then click OK, a dialog pops out to tell you how many rows are selected. See screenshot:
3. Click OK. Press Ctrl + C to copy the duplicate values and select a cell and press Ctrl + V to paste them.
Tip: If you need, you can apply Data > Remove Duplicates function to remove the duplicates in the Duplicates column.
Conclusion
Extracting duplicate values into a separate list can make repeated data easier to review, compare, and process without changing the original source range.
Formulas are useful when you need a dynamic duplicate list that can update as the source data changes, although the formula setup can be relatively complex. For a simpler approach, Kutools for Excel can quickly select duplicate values so you can copy them to another location without building complex formulas.
Choose formulas when you need a dynamic, formula-based result, or use Kutools when you want a faster way to select, copy, and further process duplicate records.
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