Unicode Character "_" (U+FF3F)

The character _ (Fullwidth Low Line) is represented by the Unicode codepoint U+FF3F. It is encoded in the Halfwidth and Fullwidth Forms block, which belongs to the Basic Multilingual Plane. It was added to Unicode in version 1.1 (June, 1993). It is HTML encoded as _.

Main Unicode Properties

Name Fullwidth Low Line
Unicode Codepoint U+FF3F
Unicode Version 1.1 (June, 1993)
Block Halfwidth and Fullwidth Forms
Plane Basic Multilingual Plane

Bidirectional Data

Bidirectional class Other Neutral (ON)
Is mirrored? No

Other Unicode Data

Category Connector Punctuation
Script Code for undetermined script
Combining Class Not Reordered
Decomposition mapping

U+FF3F Conversion

HTML (decimal) _
HTML (hex) _
HTML (named) -
URL Escape Code %EF%BC%BF
JavaScript, JSON \uFF3F
C, C++, Java \uFF3F
Python \uFF3F
Rust \u{FF3F}
Ruby \uFF3F

How to type "_"

  • Windows ?: Hold Alt, then type F F 3 F. Release Alt.
  • Mac ?: Hold Alt ⌥, then type F F 3 F. Release Alt.


  • _
    Times, Times New Roman, serif
  • _
    Helvetica, Arial, sans-serif
  • _
    Courier, Courier New, monospace

UTF Encodings

UTF-8 (hex) 0xEF 0xBC 0xBF
UTF-16 (hex) 0xFF3F
UTF-32 (hex) 0x0000FF3F