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 Remove Line Breaks - Convert Text to One Line

Remove line breaks from text and turn multiple lines into one line online. Paste your multiline text or upload a TXT or CSV file, then join the lines with a space, comma, semicolon, tab, pipe, or custom separator. Trim whitespace, skip empty lines, and copy or download the result. Your text is processed in your browser and is not sent to a server.

Options

⭐ Remove Line Breaks and Convert Multiline Text to One Line

This free multiline text to single line converter removes line breaks by joining separate text lines into one. Choose a space, comma, semicolon, pipe, tab, no separator, or a custom string. Use it to prepare a list for a spreadsheet cell, command, query, script, or form field. Conversion happens locally in your browser.

⭐ What it does

When you paste or upload text that spans several lines, this tool removes the line breaks and merges the lines into one. Choose what appears between the joined lines — a space, comma, semicolon, pipe, tab, nothing at all, or any custom string.

🔎 How to use

  1. Paste your multiline text into the Input text field, or click Upload file to load a .txt or .csv file.
  2. Choose a Separator from the dropdown. Select Custom... to type your own separator string.
  3. Enable Trim whitespace per line to remove leading and trailing spaces from each line before joining (recommended).
  4. Enable Skip empty lines to ignore blank lines in the input.
  5. The output updates automatically as you type or change the options.
  6. Click Copy to copy the one-line result, or use Download as to save it as a TXT or CSV file.

🔎 Example

Input (3 lines):

apple
banana
cherry

With Comma separator, output becomes:

apple, banana, cherry

With Pipe separator:

apple|banana|cherry

With None separator:

applebananacherry

⚙️ Available separators

  • Space — joins lines with a single space (default)
  • Comma (, ) — joins with a comma and space; useful for CSV-style lists
  • Semicolon (; ) — joins with a semicolon and space
  • Pipe (|) — joins with a pipe character; common in database and CLI output
  • Tab — joins with a tab character; useful for TSV-style output
  • None — concatenates lines directly without any character between them
  • Custom — type any string as separator, for example - , ::, or →

⚙️ Options

  • Trim whitespace per line — removes spaces and tabs at the start and end of each line before joining. Enabled by default.
  • Skip empty lines — blank lines in the input are ignored and not included in the output. Enabled by default.

⚠️ Notes

  • All processing happens entirely in your browser — your data is never sent to a server.
  • Both Unix (LF) and Windows (CRLF) line endings are handled correctly.
  • The output is a single line. Very large inputs may take longer to process depending on your device and browser.
  • A .csv upload is read as text, line by line; this tool does not parse or reformat individual CSV fields.

This tool is also known as

  • remove line breaks from text online
  • multiline text to single line converter
  • join multiple lines of text into one line
  • convert multiline text to one line
  • combine text lines with a separator

Frequently Asked Questions

Paste or upload your multiline text. The tool joins the lines into one line automatically. Choose a separator, such as a space, comma, or custom string, to control what goes between the lines.

Paste text with line breaks into the input field or upload a TXT or CSV file. Choose a separator and options. The single-line result updates automatically and can be copied or downloaded.

Yes. Choose a space, comma, semicolon, pipe, tab, or no separator. Select Custom to enter your own text between the joined lines.

Yes. Select the comma separator to turn a one-item-per-line list into a comma-separated line. You can also trim spaces and skip blank lines before joining.

Yes. Choose "None (no separator)" to concatenate the lines directly, without a space or other character between them.

Yes. Keep "Trim whitespace per line" enabled to remove leading and trailing whitespace from each line before joining. This does not remove spaces inside the text.

Yes. Enable "Skip empty lines" to leave blank lines out of the one-line result. Disable it if empty lines should remain as separators.

Yes. Text conversion runs in your browser. The text you paste and files you select are not uploaded to our server.

Yes. Select a .txt or .csv file from your device and its text is loaded into the input field. The tool treats the file as text lines; it does not parse CSV fields.

Yes. Click "Copy" to copy the result or use "Download as" to save it as a TXT or CSV file.

Yes. It handles both Windows CRLF and Unix LF line endings, as well as text pasted from common documents and editors.

The tool joins lines using the selected separator. You can choose whether to trim leading and trailing whitespace or skip empty lines; otherwise, the text content of each line is kept.

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