CSV Tools

Add Column

Add a new column with a default value to your CSV

CSV Input

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CSV Output

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CSV Format

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How to Use This Tool

This tool adds a new column to your CSV. Give it a name and a default value, and every row gets that value in the new column. The column is appended at the end.

  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. Set the column name — Type a header name for the new column.
  3. Set the default value — Type the value every row should have (leave empty for blank cells).
  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 new column is always added as the last column in the output.
What if I leave the default value empty?
Every row will have an empty cell in the new column. You can fill in values later in a spreadsheet.

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