U+0055 "U" Latin Capital Letter U Unicode Character
Unicode Version 17.0
U
U+0055 "U" Latin Capital Letter U is the standard uppercase form of the twenty-first letter in the modern English alphabet and many other Latin-based writing systems. It is typically used to represent a close back rounded vowel sound in languages such as English, French, and Spanish, though its phonetic value can vary. As a fundamental element of written communication, this character appears in countless words and serves a variety of roles from grammatical markers to mathematical notation, where it can denote a union of sets. In computing, it is encoded as a single byte (0x55) in ASCII and UTF-8, making it one of the most basic and widely recognizable symbols in digital text.
General Properties
| Code Point | U+0055 |
| Version Added | 1.1 |
| Name | Latin Capital Letter U |
| Block | Basic Latin |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
Encodings
| HTML Decimal Encoding | U |
| HTML Hex Encoding | U |
| UTF-8 Encoding | 0x55 |
| UTF-16 Encoding | 0x0055 |
| UTF-32 Encoding | 0x00000055 |
| C/C++/Java Escape | \u0055 |
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 | "u" U+0075 Latin Small Letter U |
| Lowercase Code Point | "u" U+0075 Latin Small Letter U |
| Simple Case Folding | "u" U+0075 Latin Small Letter U |
| Case Folding | "u" U+0075 Latin Small Letter U |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "u" U+0075 Latin Small Letter U |
| NFKC Simple Casefold | "u" U+0075 Latin Small Letter U |
| 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 |