Convert a List to Comma-Separated

Turn a list with one item per line into a single comma-separated line, with options to quote each item, trim spaces and skip blanks. A free column-to-comma converter that runs in your browser.

This tool converts a list into a comma-separated line. Paste your items one per line and they are joined into a single line, ready to drop into a spreadsheet cell, a query, a config value or an email field. You choose the separator — comma, semicolon, pipe, space or tab — and can wrap each item in quotes for use in code or CSV. By default it trims stray spaces and skips blank lines so the output is clean. It is the fast way to flatten a column of values into one line.

  • No sign-up, ever
  • 100% free
  • Nothing uploaded
  • Works offline after first load
  • No limits, no email wall
List (one per line)
Joined

How to use it

  1. 1

    Paste your list

    Add the items one per line, such as a column copied from a spreadsheet.

  2. 2

    Pick the format

    Choose the separator, and turn on quoting, trimming or blank-skipping as needed.

  3. 3

    Copy the line

    The joined, comma-separated line appears on the right. Copy it out.

When it comes in handy

Filling a spreadsheet cell

Flatten a column of values into one comma line to paste into a single cell or field.

Writing a query

Turn a list of IDs into a quoted, comma-separated set for an SQL IN clause.

Email recipients

Join a list of addresses into the comma-separated form a To field expects.

Instant & 100% private — nothing is uploaded

Every keystroke is handled right here in your browser. Your text is never sent to a server, so there is no sign-up, no email wall, and no length cap from us. Load the page once and it keeps working even if you go offline.

Frequently asked questions

Can I use a separator other than a comma?
Yes. As well as a comma, you can join with a semicolon, a pipe, a space or a tab, depending on what the destination expects. Semicolons suit some spreadsheet locales and email clients, while tabs are handy for pasting into a row of cells. Pick whichever the receiving tool reads correctly.
What does the quote option do?
Quoting wraps each item in double quotes and escapes any quotes already inside it, turning a list into values you can drop straight into code, JSON-like arrays or a CSV field. Leave it off for a plain comma-separated line where quotes are not needed.
How is this different from joining lines another way?
This tool is built specifically for turning a vertical list into one horizontal line with a clean separator, handling trimming and blanks as it goes. Removing line breaks instead just deletes the breaks, which can run your items together. Use this when you want a proper delimiter between each item.

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