U+004F "O" Latin Capital Letter O Unicode Character

U+004F "O" Latin Capital Letter O is a fundamental glyph in the Latin script, representing the fifteenth letter of the English alphabet and corresponding to the vowel sound /oʊ/ in standard English. It is encoded as a single code point within the Basic Latin block, which mirrors the ASCII standard, making it universally supported across all modern digital systems. Visually, it is drawn as a symmetrical, closed circular or elliptical shape, and it serves as the base character for numerous derived forms, such as accented variants like Ó, Ò, and Ô, as well as a component in many languages and mathematical notations.

General Properties

Code Point	U+004F
Version Added	1.1
Name	Latin Capital Letter O
Block	Basic Latin
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	O
HTML Hex Encoding	O
UTF-8 Encoding	0x4F
UTF-16 Encoding	0x004F
UTF-32 Encoding	0x0000004F
C/C++/Java Escape	\u004f

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
East Asian Width	Narrow
Uppercase	Yes
Simple Lowercase Code Point	"o" U+006F Latin Small Letter O
Lowercase Code Point	"o" U+006F Latin Small Letter O
Simple Case Folding	"o" U+006F Latin Small Letter O
Case Folding	"o" U+006F Latin Small Letter O
Cased	Yes
Changes When Casefolded	Yes
Changes When Casemapped	Yes
Changes When Lowercased	Yes
Changes When NFKC Casefolded	Yes
NFKC Casefold	"o" U+006F Latin Small Letter O
NFKC Simple Casefold	"o" U+006F Latin Small Letter O
Script	Latin
Script Extensions	Latin
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Alphabetic letter
Sentence Break	Upper