Comma separator
Convert a list to comma-separated values or split CSV back into a list. Custom separator, sort and deduplicate.
Ctrl + L clear | Ctrl + Shift + C copy output
How to convert a list to comma separated values
Paste your list into the left panel with one item per line. The comma-separated result appears instantly in the right panel. By default a space is added after each comma for readability — "apple, banana, cherry" rather than "apple,banana,cherry". Toggle this off for tight CSV format without spaces. Choose a different separator using the buttons at the top — semicolons are standard in European CSV formats, pipes are common in database exports, and tabs create TSV (tab-separated values) format.
Converting CSV back to a list
Switch to CSV to List mode and paste your comma-separated text. The tool splits on your chosen separator and puts each item on its own line. Whitespace around each item is trimmed automatically so "apple , banana , cherry" correctly splits into three clean items. This is useful when you receive a comma-separated list from a database query, an API response, or a spreadsheet export and need to work with the items individually.
Common use cases
SEO professionals convert keyword lists to comma-separated format for uploading to Google Ads, SEMrush, or Ahrefs. Developers convert arrays of values to strings for use in SQL IN clauses — "WHERE id IN (1, 2, 3, 4, 5)". Data analysts format lists for pasting into spreadsheet cells or database import tools. Marketers format email lists, product lists, and tag lists for various CRM and marketing platforms that require comma-separated input.
Frequently asked questions
How do I convert a list to comma separated values?
Paste your list with one item per line, select List to CSV mode, and the comma-separated result appears instantly. Customize the separator and spacing using the options provided.
Can I use a separator other than a comma?
Yes. Choose from comma, semicolon, pipe, tab, space, or enter any custom separator character.
Can I split a comma separated list back into individual lines?
Yes. Switch to CSV to List mode and paste your comma-separated text. Each value is split onto its own line with whitespace trimmed.
Can I remove duplicates from the list?
Yes. Enable Remove duplicates to automatically remove repeated values from the output. Combine with Sort A-Z to get a clean sorted unique list.
What is a CSV file?
CSV stands for Comma Separated Values. It is a plain text format where each value in a row is separated by a comma, widely used to exchange data between spreadsheets, databases, and applications.