Join Text Online or Split It Back Into Lines
Join text online by combining multiple lines into a single line with any delimiter you choose, or split a line back into separate lines whenever you need the reverse. It is a fast, no-install way to reshape lists, data, and formatted text right in your browser.
Two modes cover both directions: Join Lines merges every line into one, separated by a comma, semicolon, tab, pipe, or your own custom delimiter, while Split Text breaks a line back into many — by delimiter, by character count, or by word count. The result updates live as you type, and a built-in item counter tracks how many entries you have on each side.
It is handy for developers building SQL IN clauses or array literals, data analysts converting between CSV and lists, content writers reformatting lists, and anyone who needs to turn a list into a comma-separated line (or the other way around) in seconds.
How to Join and Split Text
Pick a mode
Choose Join Lines to merge many lines into one, or Split Text to break one line into many. Join mode is selected by default.
Set the delimiter or split method
In Join mode, pick a delimiter — Comma, Semicolon, Tab, Newline, Pipe, Space, or a Custom one. In Split mode, choose Split by Delimiter, Characters, or Words, then set the count for the last two.
Paste your text
Type, paste, or use the Paste button to drop in your text. For Join mode, put each item on its own line; for Split mode, paste the line you want broken apart. Try Sample to load example text.
Fine-tune with options
Toggle Trim whitespace and Remove empty to clean up items, wrap each one with Quote marks, and add a Prefix or Suffix. The output refreshes as you change settings.
Copy or swap the result
Click Copy Result to grab the output, or use Swap to feed the result back in and flip the mode — perfect for converting text back and forth.
Features
Multiple Delimiter Options
Join with a comma, semicolon, tab, newline, pipe, or space preset — or type any custom delimiter, including multi-character ones.
Three Split Methods
In Split mode, break text by delimiter, by a fixed number of characters per line, or by a set number of words per line.
Flexible Output Formatting
Wrap each item in single quotes, double quotes, or backticks, add a prefix and suffix, trim whitespace, and drop empty items.
Real-Time Preview
The output updates instantly with every keystroke or option change — no button to press, no waiting.
Swap Function
Send the result back to the input and automatically switch between Join and Split to convert text in both directions.
Item Counter
Both input and output areas show a live item count, so you always know how many entries you are working with.
Frequently Asked Questions
How do I combine multiple lines into one line?
Select Join Lines mode, paste your list with each item on a new line, and pick a delimiter such as Comma. Every line is merged into a single line separated by that delimiter, and you can hit Copy Result to grab it.
How do I join lines with a comma or another delimiter?
In Join mode, click the Comma preset (or Semicolon, Tab, Newline, Pipe, Space). For anything else, type into the Custom delimiter box — even multi-character values like - or , (comma plus a space) work.
How do I split text by a delimiter (comma, tab, pipe)?
Switch to Split Text mode, set Split by to Delimiter, and choose the delimiter that separates your items. Paste your text and each item lands on its own line. Enable Trim whitespace to clean up any extra spaces.
Can I split text by character count or by words?
Yes. In Split mode, set Split by to Characters or Words and enter the count. Characters breaks the text into lines of a fixed length (for example 50 characters each), while Words puts a set number of words on each line.
How do I turn a list into a comma-separated line for SQL?
Paste your values one per line, use Join Lines mode with the Comma delimiter, and set Quote to single quote. The output reads 'value1','value2','value3', ready to drop into a SQL IN clause.
Can I add brackets around each joined item?
Yes. Use the Prefix and Suffix fields — set Prefix to [ and Suffix to ] to wrap each item in brackets. Combine them with Quote marks for even more control over the output format.
Is there a limit on how much text I can process?
There is no fixed cap, and the tool handles large amounts of text efficiently because everything runs in your browser. Extremely large inputs of millions of characters may slow down the browser, but everyday lists and documents process instantly.
Is my text processed in the browser and kept private?
Yes. All joining and splitting happens locally in your browser. Your text is never sent to a server, stored, or logged — you can confirm this by using the tool offline once the page has loaded.
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