Comma Separator — Free Online Tool
Add commas, semicolons, or custom separators between words or lines of text. Clean and format list data instantly. Free online comma separator tool.
About Comma Separator
The comma separator tool takes a list of items — entered as one item per line — and joins them with commas, semicolons, pipes, or any custom character. Perfect for formatting data for SQL IN clauses, creating comma-separated values for spreadsheets, preparing email recipient lists, formatting keyword lists for ad platforms, or cleaning up pasted data from documents. You can also do the reverse — split a comma-separated list back into individual lines. Sort the results alphabetically, remove duplicates, and trim whitespace all in one step.
Frequently Asked Questions
Can I use a separator other than a comma?
Yes — choose comma, semicolon, pipe, space, tab, or type any custom separator character.
Can it handle blank lines?
Yes — blank lines are automatically ignored when generating the separated output.
Can I split a comma-separated list back into lines?
Yes — paste comma-separated values and split them back into one item per line.
Can I remove duplicates and sort the list?
Yes — both options are available before generating the output.
What is this used for in programming?
Formatting SQL IN() clause values, generating array literals, and creating delimited config strings.