Comma Separator: Convert a List to Comma-Separated Text

Comma separator

Turn a list or spreadsheet column into one comma-separated line, or split one back into a list.

All text tools

Or fix everything at once with the all-in-one text cleaner.

AI-written text

ChatGPT text cleaner: Remove hidden characters, odd spaces and Markdown from AI answers.
Remove em dashes: Replace every — with a comma, period or hyphen.
Remove Markdown: Turn Markdown into plain text: no **, #, links or tables.
AI phrase finder: Highlight overused AI words and phrases.

Lines

Remove line breaks: Turn text broken across many lines back into clean paragraphs.
Remove duplicate lines: Keep the first copy of every line and delete the repeats.
Remove empty lines: Delete blank lines, or cut long gaps down to one.
Sort lines: Sort a list A to Z, Z to A, by length, reversed or shuffled.
Add line numbers: Number every line, your way.
Remove line numbers: Strip numbers and bullets from the start of lines.
Comma separator: Turn a list into comma-separated text, and back.

Spaces and characters

Remove extra spaces: Collapse double spaces, trim lines and replace tabs.
Remove special characters: Strip symbols and keep only letters, numbers and punctuation you choose.
Remove emojis: Delete every emoji, including skin tones, flags and combined emoji.
Remove accents: Turn é into e, ü into u and ß into ss.
Convert smart quotes: Turn curly quotes, long dashes and ellipses into plain text.

Formatting and counting

Case converter: Switch text to sentence case, Title Case, UPPERCASE, camelCase and more.
Find and replace: Replace words or patterns across your text, with regex support.
Strip HTML tags: Turn HTML into clean, readable plain text.
Word counter: Count words, characters, sentences and reading time as you type.
Text diff checker: Compare two texts and see what changed.
Word frequency counter: See which words you use most.
Reverse text: Flip text backwards, by letter, word or line.

How to make a comma-separated list

Paste your list into the first box, one item per line. A column copied from Excel or Google Sheets works.
Pick a separator and, if you need them, quotes around each item.
Copy the single line from the result box.

To go the other way, choose One line → list and paste comma-separated text. Each item goes on its own line, ready to paste into a spreadsheet column.

Which format do I need?

Where it's going	Settings	Result
Email To or BCC field	Comma + space or semicolon	`a@x.com, b@x.com`
SQL `IN ( )` clause	Comma, single quotes	`'a','b','c'`
JSON or code array	Comma, double quotes	`"a","b","c"`
Tags or keywords field	Comma + space	`red, blue, green`

Quotes inside items are escaped automatically, so O'Neil or "special" won't break your code.

Questions

How do I convert an Excel column to a comma-separated list?

Select the column in Excel or Google Sheets, copy it, paste it here and copy the result. Blank cells are skipped automatically.

Can I use a line break inside a custom separator?

Yes. Choose Custom and type \n for a new line or \t for a tab.

Is my data uploaded?

No. Everything runs in your browser, so it's safe for email lists and customer data.