Line break at a specified length

Insert a line break at a specified length.

Original text

Formatted text

Tips

  • Email clients traditionally wrap lines at around 72–80 characters. Formatting text before sending makes it easier to read.
  • HTML tags and Markdown-formatted text are not supported. Please use plain text only.
  • When text contains both English and another language, breaks may occur in the middle of an English word.
  • For printed documents or narrow text areas, wrapping at 30–40 characters per line tends to look clean.

FAQ

Each character is counted as one character regardless of byte width. The tool counts by Unicode code points, not bytes, so a Japanese full-width character counts the same as a Latin letter.

HTML tags are treated as plain text and included in the character count, so they may be split mid-tag and break the markup. This tool is intended for plain text only.

No — the tool breaks strictly at the specified character count without checking word boundaries. If you need word-aware wrapping for English text, use a dedicated word-wrap tool instead.
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Side Note — The 80-Character Curse: A Tradition from Punch Cards

Many code editors and style guides recommend an 80-character line limit, but this number traces back to the punch card IBM designed in 1928, which had 80 columns per row. The column count of this physical storage medium became the standard terminal display width, and survives today as the default terminal size (80 columns × 24 rows).

The Linux kernel's official coding style guide still states that lines should not exceed 80 characters. However, since GitHub and VS Code support wider displays, many teams have relaxed their limits to 120 or even 160 characters.

In email culture, wrapping at 72–78 characters has long been the convention. This is because RFC 2822 (the email format standard) sets a maximum of 1,000 characters per line but recommends wrapping at around 72 for readability.

→ Read related trivia

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