Text Wrapper (Word Wrap and Line Breaks)

Plain-text formats still have line-length rules: email bodies and Git commit messages are usually wrapped at 72 columns, code comments at 80, and many forms and old systems reject longer lines. This text wrapper breaks lines at the width you choose without cutting words, keeps paragraph breaks, and can also add a line break after every sentence, every N characters or after any symbol you name.

How to use this tool

1. Paste your text.
2. Pick what to do: wrap long lines, reflow paragraphs (join the old line breaks first), one sentence per line, a break every N characters, or a break after a symbol.
3. Set the line width, and optionally a prefix such as “> ” for an email quote or “// ” for a code comment.
4. Copy the result; the note shows how many lines it has and the longest one.

Formula

Greedy wrap: add the next word if current width + space + word width ≤ line width, otherwise start a new line

This is the first-fit method that editors and the Unix fold and fmt tools use. Widths are monospace columns: Hangul, Chinese, Japanese, full-width forms and emoji count as two columns when the box is ticked (Unicode East Asian Width), combining accents count as zero, and tabs as four spaces. A word longer than the whole line is split across lines or kept whole, as you choose; web addresses are never split by default.

Example

At a width of 10, “The quick brown fox jumps over the lazy dog” becomes five lines: “The quick” (9), “brown fox” (9), “jumps over” (exactly 10), “the lazy” (8) and “dog”. With the prefix “> ” and a width of 12, “one two three four five” becomes “> one two”, “> three four” and “> five”, because the prefix uses 2 of the 12 columns.