Convert Newlines to Spaces
Advanced line-to-delimiter converter with sorting, formatting & more
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What is Convert Newlines to Spaces?
Convert Newlines to Spaces is a text formatting tool that replaces line breaks (newlines) with space characters or custom delimiters. This joins multiline text into a single continuous line, essential for command-line inputs, URL formatting, and data processing tasks.
To split text back into separate lines, use Spaces to Newlines. To utterly remove all line breaks without replacing them, try Remove Line Breaks.
Features
Flexible Spacing
Single, double, or custom replacement text.
Join Lines
Convert vertical lists to horizontal single-line format.
Custom Delimiters
Use commas, pipes, or any custom separator.
Comparison Mode
View multiline and single-line versions side-by-side.
File Upload & Download
Process files and save converted results.
100% Private
All processing happens locally in your browser.
Common Use Cases
Command-Line Input
Convert multiline parameters into single-line command arguments. Join file paths, options, or flags spread across multiple lines into a single executable command.
CSV Formatting
Use custom mode with comma delimiter to convert vertical lists into CSV format. Transform item lists into comma-separated values for spreadsheet imports.
Search Queries
Join search terms from multiple lines into a single space-separated query. Quickly prepare keyword lists for search engines or database queries.
Example: Create Comma-Separated List
banana
cherry
orange
Frequently Asked Questions
How do I convert multiline text to a single line?
Paste your multiline text into the input area and select 'Single Space' mode (default). Every newline (line break) will be replaced with a single space, joining all lines into one continuous line. Perfect for converting formatted text into a single-line string.
What is the difference between Single and Double Space?
Single Space replaces each newline with one space character, creating a compact single line. Double Space replaces each newline with two spaces, providing more visual separation between what were originally separate lines. Choose based on your readability needs.
Can I use custom text instead of spaces?
Yes! Select 'Custom' mode and enter your replacement text. You can use ' | ' for pipe-separated output, ', ' for comma-separated, or any other delimiter. This is useful for creating CSV data, command-line arguments, or custom-formatted strings.
How do I create a comma-separated list from lines?
Select 'Custom' mode and enter ', ' (comma + space) as your custom replacement. Each line will be joined with commas, converting your vertical list into a horizontal comma-separated format: 'apple, banana, cherry'.
Why would I need to remove line breaks?
Common uses include: (1) Preparing text for command-line tools that expect single-line input, (2) Creating URL-safe strings, (3) Formatting data for CSV imports, (4) Joining code that was split across lines, (5) Converting lists to space-separated values for search queries.
Is my data safe and private?
Yes, 100% safe. This tool runs entirely in your web browser using client-side JavaScript. Nothing you type or paste is ever sent to our servers or stored anywhere. It works completely offline after the page loads.
Can I upload files to convert?
Yes! Click the 'Upload' button to load multiline text files (.txt, .md, .csv, .log, .json) directly. The tool processes the file and joins all lines based on your selected spacing option. Download the single-line result afterward.
How do I see before and after comparison?
Click the 'Compare' button to enable comparison mode. This displays your original multiline text on the left and the converted single-line text on the right side-by-side, making it easy to verify the transformation.
What happens to existing spaces in my text?
Existing spaces within each line are preserved. The tool only replaces newline characters (line breaks) with your chosen replacement. So 'Hello World' on one line stays as 'Hello World', with only the newlines between lines being replaced.
Can I convert this back to multiline?
Yes! Use the Convert Spaces to Newlines tool (the reverse operation). However, if you used custom delimiters, you'll need a different tool or manual editing to restore the original line breaks accurately.