U004F

U+004F is the Unicode code point assigned to the Latin capital letter O. It represents the uppercase form of the letter O used in the Latin alphabet. It belongs to the Basic Latin block, and its official Unicode name is LATIN CAPITAL LETTER O. The general category is Lu (Letter, uppercase), and the script is Latin. Its decimal value is 79.

In Unicode, U+004F is the uppercase O used in ASCII-compatible text. In UTF-8, U+004F is encoded as a single byte 0x4F. In HTML, it can be represented by a numeric character reference as O or O. In plain text, it appears simply as the glyph O, with typography varying by font.

Diacritic variants such as Ó, Ò, Ö are not part of U+004F; those letters are encoded at other code points in extended Latin blocks. U+004F denotes the unmodified Latin capital letter O, which serves as the uppercase counterpart to U+006F, the Latin small letter o. The character is used across languages that employ the Latin script and appears in a wide range of vocabulary in Latin-based writing systems. Its behavior in encoding is defined by Unicode and ASCII compatibility, ensuring consistent representation in digital text.