Line break to comma
Convert line-by-line lists to comma-separated text or split comma-separated values back to lines.
Ctrl + L clear | Ctrl + Shift + C copy output
About line break to comma conversion
Vertical lists and comma-joined strings are the two universal shapes of the same data, and moving between them is one of the most repeated micro-tasks in office and development work. A column copied from Excel arrives as lines; the search filter, tag box or code snippet you are pasting into wants commas. Doing the join by hand means clicking at the end of every line — fine for five items, unworkable for five hundred. This converter collapses that chore to a single paste, in either direction, with the separator of your choice.
The many names for the same conversion
This conversion is searched for under a dozen different names depending on which end of it you are looking at, and they all describe the same single operation this tool performs. Whether you call it line to comma, newline to comma, next line to comma, enter to comma, column to comma or simply list to comma, you are asking for the line breaks between your items to be replaced by a separator so the whole list becomes one string. The reverse direction — comma to line, comma separated to list, splitting a delimited string back into rows — is the same operation run backwards, and the Comma to Lines mode handles it.
| What you have | What you want | Mode to use |
|---|---|---|
| A column copied from Excel or Google Sheets | One comma-separated string | Lines to Comma |
| A list with one item per line | Values joined by a semicolon or pipe | Lines to Comma, custom separator |
| A long comma-separated string | One item per line, ready to paste into a column | Comma to Lines |
| A pipe- or tab-delimited export | A clean vertical list | Comma to Lines, custom separator |
| Text where pressing Enter created the breaks | A single line with commas | Lines to Comma |
Common use cases
Developers frequently need to paste a column of values from a spreadsheet into a SQL query as a comma-separated list — this tool handles that in one step. SEO professionals convert keyword lists from one-per-line format to comma-separated for uploading to tools. Data analysts format lists for use in filter inputs, search forms, and configuration files. Email marketers convert address lists between formats for different mailing platforms.
The awkward part is rarely the conversion itself but what arrives with it. Spreadsheet columns bring trailing spaces, exported lists bring blank rows, and copied web content brings duplicates. Blank lines are removed here by default; for the rest, the comma separator adds deduplication, sorting and quote-wrapping in the same pass, duplicate line remover strips repeats before you join, and remove extra spaces tidies the padding a spreadsheet copy leaves behind. If the destination is a spreadsheet file rather than a field, text to CSV builds the rows and columns directly.
Frequently asked questions
How do I convert line breaks to commas?
Paste text where each item sits on its own line — a column copied from Excel or Google Sheets, a list of email addresses, tags or keywords — and the tool replaces every line break with a comma and space, turning the list into a single comma-separated string. Results appear instantly as you type, ready to paste into a formula, an email field or code.
Can I convert comma separated text back to a list?
Yes. Switch to Comma to Lines mode, paste the comma-separated string, and every value moves onto its own line instantly. This direction is the standard cleanup when an API response, database result or exported field hands you one long joined string and you need to scan, sort or edit the items individually — or paste them into a spreadsheet column, where one line per item is exactly what the paste expects.
Can I use a different separator?
Yes. Beyond the comma, presets cover semicolons (the convention in European spreadsheet locales), pipes (common in database exports), spaces and tabs, and a custom field accepts any character your target system requires. The same separator setting drives both directions, so you can split on pipes and re-join on commas in two quick passes when translating between systems.
Can I remove blank lines from the list?
Yes — the Remove blank lines option is on by default, so empty lines in your pasted list do not become stray commas in the output. Blank lines sneak in constantly when copying from spreadsheets with gaps or documents with paragraph spacing, and without this option a ten-item list can come out with twelve commas. Disable it only in the rare case where empty positions in the output are meaningful.
What is the difference between this and the comma separator tool?
This tool is the quick version: paste, convert, copy, done. The comma separator tool is the full workbench, adding deduplication, alphabetical sorting, and quote-wrapping of each item for SQL and code contexts. Reach for this one for everyday joins and splits, and switch to the comma separator when the list itself needs cleaning up along the way.