Comma Separator Tool
Convert a column of lines into a comma-separated list (and back), with options to add quotes, trim spaces, remove duplicates and choose any delimiter. Private & instant.
Last reviewed by the Radiatus Cloud team
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Switch between a column and a comma-separated list
Data arrives in two shapes and you constantly need the other one. A column of lines is what you get from a spreadsheet or a text export; a comma-separated list is what a query, a config value or an API parameter expects. This tool converts a column into a comma-separated line and back again, so you stop hand-editing between the two formats.
The separators and wrapping are configurable
A bare comma-separated list is often not quite what the destination wants. Sometimes each item needs quotes around it, as in a SQL IN clause; sometimes the separator is a comma-space, a semicolon or a pipe. Being able to set the separator and wrap each item means the output drops straight into its destination without a second round of find-and-replace.
Both directions, one tool
Going the other way matters just as much: pasting a comma-separated list and getting one item per line is how you turn an inline value back into an editable column. Having both directions in one place means you can round-trip data between the two shapes freely. The conversion runs in your browser with nothing uploaded.
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Frequently Asked Questions
Can it convert a comma-separated list back into lines?
Yes. The tool works in both directions: column to comma-separated list, and comma-separated list back to one item per line.
Can I put quotes around each item?
Yes. Wrapping each item in quotes is an option, which is what a SQL IN clause or a quoted array needs.
Can I use a separator other than a comma?
Yes, the separator is configurable, so you can produce comma, comma-space, semicolon or pipe-separated output.
Does it handle blank lines?
Blank lines can be dropped so they do not become empty items in the list.
Is the data uploaded?
No. The conversion runs entirely in your browser.
Privacy & Security
All processing happens locally in your browser — nothing is uploaded.
How to Use
Paste a list, choose the delimiter and options. Switch direction to split a list back into lines.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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