Unicode Character "O" (U+004F)

The character O (Latin Capital Letter O) is represented by the Unicode codepoint U+004F. It is encoded in the Basic Latin block, which belongs to the Basic Multilingual Plane. It was added to Unicode in version 1.1 (June, 1993). It is HTML encoded as O.

Main Unicode Properties

Name Latin Capital Letter O
Unicode Codepoint U+004F
Unicode Version 1.1 (June, 1993)
Block Basic Latin
Plane Basic Multilingual Plane

Bidirectional Data

Bidirectional class Left To Right (L)
Is mirrored? No

Character Case

Case Uppercase
Lowercase character o (U+006F)

Other Unicode Data

Category Uppercase Letter
Script Latin
Combining Class Not Reordered

U+004F Conversion

HTML (decimal) O
HTML (hex) O
HTML (named) -
URL Escape Code %4F
CSS \00004F
JavaScript, JSON \u004F
C, C++, Java \u004F
Python \u004F
Rust \u{004F}
Ruby \u004F

How to type "O"

  • Windows ?: Hold Alt, then type 0 0 4 F. Release Alt.
  • Mac ?: Hold Alt ⌥, then type 0 0 4 F. Release Alt.


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

UTF Encodings

UTF-8 (hex) 0x4F
UTF-16 (hex) 0x004F
UTF-32 (hex) 0x0000004F

Characters based on "O" (U+004F)