peartools

Text to One Line Converter

Flatten multi-line text into a single line and choose exactly how the lines are joined, with a space, a comma, or your own separator. Everything runs in your browser, so your text stays on your device.

Join lines with
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Result
0lines0characters

About converting text to one line

What converting text to one line does

This tool takes text that is spread across many lines and merges it into a single continuous line. You decide what sits between the lines, whether that is a space for flowing prose, a comma for a list, or a custom character for something more specific. It is the fast way to turn a vertical list into a comma separated line, pull a wrapped block back into one line for a form field, or prepare values for a spreadsheet or a bit of code.

Why use our one line converter

  • ·Free. No signup, no paywall, no limits.
  • ·Your separator. Space, comma, semicolon, pipe, none, or a custom one.
  • ·Runs in your browser. Nothing gets uploaded, your text stays with you.
  • ·Clean output. Skip blank lines, trim each line, and collapse extra spaces.
  • ·No limit. Flatten a few lines or thousands, it keeps up.

Ways to join your lines

Space

Lines are joined with a single space, turning a wrapped block back into flowing text. The best choice for prose and sentences that got split across lines.

BeforeThe quick↵ brown fox↵ jumpsAfterThe quick brown fox jumps

Comma

Each line is separated by a comma and a space, which is ideal for turning a vertical list into a comma separated line for CSV, tags, or a quick array.

Beforered↵ green↵ blueAfterred, green, blue

Semicolon or pipe

Join lines with a semicolon or a pipe when a comma would clash with your data, such as email lists, shell values, or fields that already contain commas.

Beforeone↵ two↵ threeAfterone; two; three

Custom or none

Set your own separator, like a dash or an arrow, or choose None to glue the lines together with nothing between them at all.

Beforeabc↵ def↵ ghiAfterabcdefghi

Joining lines for SQL, JSON, and spreadsheets

A few common jobs need quotes around each item before the lines are joined. Use the add prefix and suffix tool first, then join the result here:

You wantStep 1: prefix and suffixStep 2: join withResult
SQL IN list' and 'Comma'red', 'green', 'blue'
JSON array items" and "Comma"red", "green", "blue"
Hashtags# and nothingSpace#red #green #blue

In Excel and Google Sheets you can do the same join with a formula: =TEXTJOIN(", ", TRUE, A1:A10) joins a column with commas and skips empty cells.

When to convert text to one line

Flattening text to a single line comes up more often than you might think. Here are the most common reasons people use it:

  • ·Building a comma separated list. Turn a column of names, emails, or tags into a single comma separated line for a CSV, a form, or a bulk paste.
  • ·Fitting text into a single field. Some inputs, search bars, and config values expect one line, so a wrapped block needs to be flattened first.
  • ·Preparing data for code. Join values with a comma or pipe to drop them into an array, a query, or a script argument.
  • ·Cleaning up copied text. Text pasted from a PDF or email often arrives broken across lines, and joining it back fixes the flow.
  • ·Minifying a snippet. Collapse a short block into one line when you need a compact, single line version to share or store.

Related text tools

Frequently asked questions

How do I convert multiple lines into one line?
Paste your text into the box, pick how you want the lines joined, such as a space or a comma, then click Convert to one line. The tool merges every line into a single line and you can copy the result or download it as a .txt file.
Can I choose what goes between the lines?
Yes. Pick a space, comma, semicolon, pipe, or none from the separator buttons, or choose Custom to type your own, like a dash or an arrow. The joined text updates to use whatever you select.
What is the difference between this and removing line breaks?
They overlap, but this tool is built for flattening a list or block into a single line with a separator of your choice. It is useful when you want commas between items rather than just spaces. If you only need to rejoin wrapped paragraphs, the Remove Line Breaks tool keeps blank lines as paragraph breaks.
Does it remove blank lines?
By default, empty lines are skipped so you do not end up with double separators or gaps. Turn off 'Skip empty lines' if you want blank lines kept in place.
What do the trim and collapse options do?
'Trim lines' removes leading and trailing spaces from each line before they are joined, and 'Collapse spaces' reduces any run of extra spaces in the result down to one. Together they keep the single line clean when the original text had uneven spacing.
Is there a limit on how much text I can convert?
No. You can flatten a few lines or many thousands and the tool handles them instantly. Because everything runs on your own device, there is no upload cap and no waiting on a server.
Is the tool free?
Yes, it is completely free with no signup, no limits, and no watermarks. Use it as often as you like.
Is my text safe and private?
Your text never leaves your browser. All processing runs locally on your device, so nothing is uploaded to a server. Once the page has loaded you can even use it offline.