How do I split a single line into multiple lines?

Paste the line into the input, choose the delimiter to split on — comma, semicolon, space, sentence end, or a custom string — and click Convert. Each piece is placed on its own line in the output, ready to copy or download.

Can I split a paragraph into one sentence per line?

Yes. Choose Sentence end as the split mode and the text is broken after periods, exclamation marks, and question marks, with the punctuation kept on its sentence. This is a popular technique for editing, translation, and subtitle drafting.

What happens to the delimiter after splitting?

The delimiter itself is removed — it marks the cut points and does not appear in the output. With trimming enabled, the spaces that typically follow commas are removed as well, leaving clean values on each line.

How do I handle items that contain commas?

Split on a semicolon or a custom delimiter instead, whichever the data actually uses between items. The custom field accepts multi-character delimiters too, such as a double hyphen or an arrow string.

Why are there empty lines in my result?

Repeated delimiters — like two commas in a row — produce empty entries. Enable Remove empty lines and those entries are dropped automatically, so the output contains only real values.

Can I convert the lines back into a single line later?

Yes. The companion Multi-Line to Single Line converter joins lines with a separator of your choice, making the round trip between inline and vertical formats lossless when you use the same delimiter both ways.

Is my data private when using this tool?

Yes. Splitting happens client-side in your browser; nothing is transmitted or stored anywhere. Recipient lists, exports, and confidential text are safe, and everything is cleared from memory when the page closes.

Single Line to Multi-Line Converter - Split Text into Lines

Data often arrives as one endless line: comma-separated values exported from a system, a tag string from a CMS, a paragraph that needs to become a sentence list, or space-separated tokens from a log. Reading and editing such a line is hard, and many tools — spreadsheets, checklists, scripts — want one item per line instead. This free converter breaks a single line into multiple lines at the delimiter you specify: comma, semicolon, space, sentence boundaries, or any custom string. Each piece lands on its own line, optionally trimmed and with empty entries removed, ready to paste into a column, a list, or a script. Everything runs locally in your browser.

Splitting by Commas and Semicolons

Comma splitting is the workhorse for delimited data: recipient lists, tag strings, exported values, and function arguments all unfold into a readable vertical list with one click. Semicolons take over when the items themselves contain commas — addresses, book titles, or European-style CSV exports. After splitting, the trim option removes the space that conventionally follows each comma, so the resulting lines are clean values without leading whitespace, ready for a spreadsheet column or further processing.

Breaking a Paragraph into Sentences

The sentence mode splits at periods, exclamation marks, and question marks followed by whitespace, keeping the punctuation attached to its sentence. Turning a paragraph into one sentence per line is a powerful editing technique: long, tangled sentences become immediately visible, rhythm and length variation can be assessed at a glance, and translators and copywriters can work through the text line by line. The same format suits subtitle drafting and feeding sentence-level text into analysis tools. Abbreviations with internal periods may occasionally cause an extra split, which is quick to fix in the output.

Splitting on Spaces and Custom Delimiters

Splitting by space puts every word or token on its own line — useful for building word lists, inspecting log tokens, or preparing input for word-frequency tools. The custom delimiter handles everything else: pipes from table-like exports, slashes from paths, double hyphens, arrow strings, or any multi-character separator a system produced. The delimiter itself is removed during the split, so the output contains only the data. Combined with Remove empty lines, repeated delimiters do not generate blank rows.

Preparing Data for Spreadsheets and Scripts

One item per line is the universal interchange format. Pasting a split list into a spreadsheet fills a column with one value per cell. Shell scripts and programming languages read line-delimited input naturally with loops and readLine functions. Checklist and task apps create one item per pasted line. Converting inline data to lines first therefore saves the manual re-entry that single-line strings would otherwise require. The output statistics show how many lines were produced, a quick sanity check that the delimiter matched the expected number of items.

Round-Tripping with the Multi-Line Converter

This tool is the inverse of the Multi-Line to Single Line converter, and the pair covers both directions of the same task. Split a comma string into lines, edit, sort, or deduplicate the items, then join them back with the same delimiter. The round trip is lossless when trimming conventions match, so you can move between the human-friendly vertical form and the machine-friendly inline form as often as the work requires.

Privacy and Client-Side Processing

The split runs entirely in your browser with JavaScript; the text is never uploaded, logged, or stored on a server. Customer lists, internal exports, and confidential paragraphs are safe to process here. The text disappears from memory when you close or refresh the page, and there are no length limits beyond what your browser handles comfortably.