How to duplicate rows in excel based on cell value

Answer

Duplicating rows in Excel based on a cell value can be done using formulas, helper columns, or VBA, depending on how many times each row needs to be duplicated.

Method 1: Using a Helper Column and Formulas

1. Identify the column that contains the number of times each row should be duplicated. For example, column C contains the values 2, 3, 1, indicating how many times each row should repeat.

2. Insert a new helper column (e.g., column D).

3. Use a formula to create a sequential list. Enter the following formula in the first row of the helper column:

   =REPT(A2 & "♦" & B2 & "♦" & C2 & "♦", C2)

   Replace A2, B2, and C2 with the actual columns of your row. The ♦ is a delimiter to separate values.

4. Drag the formula down to all rows.

5. Copy the helper column and paste as values.

6. Use the Text to Columns feature under the Data tab to split the values back into separate columns using the delimiter.

This method works well when the dataset is not extremely large.

Method 2: Using VBA (Macro)

VBA automates the duplication process for larger datasets.

1. Press Alt + F11 to open the VBA editor.

2. Go to Insert → Module.

3. Paste the following code:

   Sub DuplicateRows()

       Dim ws As Worksheet

       Dim lastRow As Long

       Dim i As Long

       Dim repeatCount As Long

       Set ws = ActiveSheet

       lastRow = ws.Cells(ws.Rows.Count, "A").End(xlUp).Row

       

       For i = lastRow To 2 Step -1

           repeatCount = ws.Cells(i, "C").Value 'Column C has the repeat number

           If repeatCount > 1 Then

               ws.Rows(i + 1).Resize(repeatCount - 1).Insert

               ws.Rows(i).Copy ws.Rows(i + 1).Resize(repeatCount - 1)

           End If

       Next i

   End Sub

4. Close the VBA editor.

5. Press Alt + F8, select DuplicateRows, and click Run.

The macro duplicates each row according to the value in column C.

Method 3: Using Power Query

1. Select your table and go to Data → Get & Transform → From Table/Range.

2. In Power Query, add a Custom Column with the formula:

   List.Repeat({[Column1],[Column2],[Column3]}, [RepeatCount])

   Replace columns with your table headers and [RepeatCount] with the column containing the duplication number.

3. Click Close & Load to return the duplicated rows to Excel.

Power Query is ideal for dynamic tables and large datasets.

Notes

• Using formulas is fast for small datasets.

• VBA provides complete automation for repetitive tasks.

• Power Query is best when handling large tables and dynamic data.

• Always back up your Excel file before running macros.

This approach ensures accurate duplication of rows based on any numeric value in a specific cell.

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