_

Fullwidth Low Line

Copy and paste the fullwidth low line symbol _ (U+FF3F) instantly. Part of the Halfwidth and Fullwidth Forms Unicode block.

Works everywhere: websites, documents, social media, code editors

Character Codes

UnicodeU+FF3F
HTML Entity_
CSS Code\FF3F
JavaScript\u{FF3F}
Decimal_

About This Symbol

Name
Fullwidth Low Line
Code Point
U+FF3F

The Fullwidth Low Line (_) is a Unicode character assigned to the Halfwidth and Fullwidth Forms block at code point U+FF3F. This block contains characters used across a variety of applications including technical documentation, web development, mathematical notation, and everyday digital communication. The fullwidth low line symbol can be inserted directly into text or referenced through its HTML entity, CSS code, or JavaScript escape sequence for use in websites and applications.

How to Use

  • 1.Click "Copy Symbol" above to copy _ to your clipboard
  • 2.Paste it anywhere with Ctrl+V (or Cmd+V on Mac)
  • 3.Or use the HTML entity _ in your code
  • 4.For CSS, use \FF3F with the content property

Understanding Fullwidth Low Line

At code point U+FF3F, the fullwidth low line (_) occupies a carefully chosen position within the Halfwidth and Fullwidth Forms allocation. The Unicode Consortium assigned this character to address the need for a reliable, cross-platform representation of this symbol in electronic documents and interfaces.

The hexadecimal value FF3F places this character at decimal position 65343 in the Unicode table. When embedding this character in source code, developers can choose between the HTML numeric reference _, the CSS escape \FF3F, or the JavaScript literal \u{FF3F}. Each method guarantees correct rendering regardless of the file encoding.

Known by its descriptive name referencing "fullwidth low," this character serves a specific role that generic symbols cannot fill. It appears in specialized typography, technical standards, and digital content where precision in symbol choice directly affects meaning or layout.

Related Characters from Halfwidth and Fullwidth Forms