All Tools VersePrepend CSV Columns
Add a new column at the start of every row in your CSV, with a value you set. Free, private, and works entirely in your browser.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Add one or more columns to the start of every CSV record. Enter fixed values to prepend and optionally add an automatic row-number column, with quoting handled correctly for fields that contain delimiters. Runs entirely in your browser.
How to Use Prepend CSV Columns
- Paste your CSV. Drop the CSV text into the input box.
- Set the new value. Choose what to fill the new first column with.
- Prepend. Select the button to add the column at the start.
- Copy the result. Use the copy button to grab the new CSV.
Frequently Asked Questions
Does it handle quoted fields?
Yes. Fields wrapped in quotes, including ones that contain commas or line breaks, are parsed and rebuilt correctly.
Does it affect the header?
The new column is added to every row, so you can give it a header and a value for the data rows.
Is my data sent anywhere?
No. Everything runs in your browser, so the CSV you paste is never uploaded.
Is it free?
Yes. Every tool here is free to use with no sign up.
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