CSV Tools

Duplicate Column

Create a copy of an existing column

CSV Input

Try a sample:

Options

Provide CSV input above to select a column.

CSV Output

Select a column to duplicate...

More Options

CSV Format

Input

How to Use This Tool

This tool creates an exact copy of a column in your CSV. Select the column to duplicate, optionally give the copy a new name, and the output updates instantly.

  1. Provide your CSV — Paste CSV text into the input area, drop a CSV file onto the File tab, or enter a URL on the URL tab.
  2. Select a column — Choose the column you want to duplicate from the dropdown.
  3. Name the copy — Optionally change the default name for the new column.
  4. Get your output — Copy the result to your clipboard or save it as a .csv file.

FAQ

3 questions
Does this tool upload my data?
No. It runs entirely in your browser using JavaScript. Your CSV data is never sent to a server.
Where does the new column appear?
The duplicated column is always added as the last column in the output.
Can I change the name of the copy?
Yes. By default the new column is named '{original}-copy', but you can type any name you want in the text input.

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