Join Lines
Join multiple lines of text into a single line with your choice of separator and optional quoting.
About This Free Online Join Lines
Our free online Join Lines tool concatenates all lines of your text into a single line (or your chosen structure). Choose from preset separators — space, comma, semicolon, pipe, or custom — and optionally wrap each item in single quotes, double quotes, or parentheses. Perfect for converting lists to comma-separated values, building SQL IN clauses, formatting array literals, or cleaning up multiline text for single-line use. All processing is done in your browser.
Features of Our Join Lines
- Join all lines into one line
- Preset separators: space, comma, semicolon, pipe, newline
- Custom separator option
- Quote options: none, single, double, parentheses
- Trim whitespace from each line
- Real-time preview
- 100% private — browser-only processing
How to Use the Join Lines
The Join Lines works right in your browser — no signup, no installation. Follow these steps:
- Paste your multiline text into the input area.
- Choose your separator (comma, space, etc.).
- Optionally enable quoting around each item.
- Copy the joined output.
Frequently Asked Questions About Join Lines
What is this tool useful for?
Common uses include: converting lists to CSV, building SQL IN clauses (a,b,c), formatting arrays for code, and combining multiline text into a single line.
Can I trim whitespace from each line?
Yes. The "Trim lines" option removes leading and trailing whitespace from each line before joining.
Why Choose the Join Lines?
Bulk text edits that would take ages by hand happen in one step with the Join Lines. It applies your changes the moment you make them, entirely in the browser, so your content stays on your device and the result is ready to copy immediately.