U+FF31 "Ｑ" Fullwidth Latin Capital Letter Q Unicode Character
Unicode Version 17.0
Ｑ
U+FF31 "Ｑ" Fullwidth Latin Capital Letter Q is a typographic variant of the standard Latin capital letter Q, designed to occupy the same character width as CJK (Chinese, Japanese, and Korean) ideographs in monospaced and East Asian text environments. It is part of the Fullwidth and Halfwidth Forms block in Unicode, where characters are encoded to match the visual width of ideographic characters, allowing mixed text to maintain consistent alignment. This fullwidth Q is not a separate letter but a presentation form, primarily used in contexts like plain text technical documentation, legacy systems, or when stylistically emphasizing a character within vertical or fixed-width writing layouts.
General Properties
| Code Point | U+FF31 |
| Version Added | 1.1 |
| Name | Fullwidth Latin Capital Letter Q |
| Block | Halfwidth and Fullwidth Forms |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Wide |
| Decomposition Mapping | "Q" U+0051 Latin Capital Letter Q |
Encodings
| HTML Decimal Encoding | Ｑ |
| HTML Hex Encoding | Ｑ |
| UTF-8 Encoding | 0xEF 0xBC 0xB1 |
| UTF-16 Encoding | 0xFF31 |
| UTF-32 Encoding | 0x0000FF31 |
| C/C++/Java Escape | \uff31 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Fullwidth |
| Uppercase | Yes |
| Simple Lowercase Code Point | "ｑ" U+FF51 Fullwidth Latin Small Letter Q |
| Lowercase Code Point | "ｑ" U+FF51 Fullwidth Latin Small Letter Q |
| Simple Case Folding | "ｑ" U+FF51 Fullwidth Latin Small Letter Q |
| Case Folding | "ｑ" U+FF51 Fullwidth Latin Small Letter Q |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "q" U+0071 Latin Small Letter Q |
| NFKC Simple Casefold | "q" U+0071 Latin Small Letter Q |
| 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 | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Upper |