A comma separator converts lists between different formats — paste a newline-separated list and get it comma-separated, or vice versa. Great for preparing SQL queries, spreadsheet imports, API calls, and data processing workflows.
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Output
How to Use the Comma Separator
The comma separator is a multi-purpose list converter that handles the most common text formatting tasks for data preparation. Here's how to use it for different scenarios:
Converting a Newline List to Comma-Separated
Paste your list (one item per line) into the input. Select "New line" as input delimiter and "Comma + Space" as output. Click Convert. Result: "apple, banana, cherry". Use this to prepare CSV rows, SQL lists, or API parameters.
Converting Comma-Separated to Newline
Paste "apple, banana, cherry". Set input to "Comma" and output to "New line". Click Convert. Each item appears on its own line — perfect for importing to Excel, cleaning email lists, or preparing database inserts.
Adding Quotes for SQL or Code
After converting to your target format, use the Quote Style option to wrap each item in single or double quotes. Input "apple, banana" → output "'apple', 'banana'" — ready for a SQL WHERE IN clause. Double quotes work for JSON arrays and JavaScript.
Sorting and Deduplication
Use Sort A→Z to alphabetize your list before conversion. Enable "Remove duplicates" to keep only unique items — essential when merging lists from multiple sources. Both operations happen before the output delimiter is applied.
FAQ
Is the comma separator free to use?
Yes, completely free with no signup required. Everything runs in your browser — no text is sent to any server. Convert as many lists as you like with no limits.
What delimiters can I use to split the input?
Choose from comma, semicolon, pipe (|), tab, or a custom delimiter you define. The tool will split your input on the selected delimiter and then rejoin with the output delimiter of your choice.
Can I add quotes around each item?
Yes — use the quote style option to wrap each item in single quotes or double quotes. This is useful for SQL IN clauses (WHERE id IN ('a', 'b', 'c')), JavaScript arrays, and Python lists.
What does the trim option do?
Trim removes leading and trailing whitespace from each item before processing. This is useful when pasting from spreadsheets or documents where cells may have extra spaces.
How does the sort and deduplicate feature work?
Sort alphabetically (A-Z) reorders items by Unicode sort order. Deduplicate removes items that appear more than once, keeping the first occurrence. Both options apply after splitting and trimming.