U+FF58 "ｘ" Fullwidth Latin Small Letter X Unicode Character
Unicode Version 17.0
ｘ
U+FF58 "ｘ" Fullwidth Latin Small Letter X is a typographic variant of the standard Latin letter "x" designed to occupy the same horizontal space as a CJK ideograph, typically used in East Asian typography for consistent alignment in mixed-script text. It belongs to the "Halfwidth and Fullwidth Forms" block and is encoded as a compatibility character, primarily serving legacy purposes in contexts where proportional Latin letters would disrupt the monospaced grid of fullwidth characters. While visually identical in shape to its standard counterpart, its doubled width allows it to integrate seamlessly into Japanese, Chinese, or Korean text environments where fullwidth punctuation and letters are common.
General Properties
| Code Point | U+FF58 |
| Version Added | 1.1 |
| Name | Fullwidth Latin Small Letter X |
| Block | Halfwidth and Fullwidth Forms |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Wide |
| Decomposition Mapping | "x" U+0078 Latin Small Letter X |
Encodings
| HTML Decimal Encoding | ｘ |
| HTML Hex Encoding | ｘ |
| UTF-8 Encoding | 0xEF 0xBD 0x98 |
| UTF-16 Encoding | 0xFF58 |
| UTF-32 Encoding | 0x0000FF58 |
| C/C++/Java Escape | \uff58 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Fullwidth |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ｘ" U+FF38 Fullwidth Latin Capital Letter X |
| Simple Titlecase Code Point | "Ｘ" U+FF38 Fullwidth Latin Capital Letter X |
| Uppercase Code Point | "Ｘ" U+FF38 Fullwidth Latin Capital Letter X |
| Titlecase Code Point | "Ｘ" U+FF38 Fullwidth Latin Capital Letter X |
| Cased | Yes |
| Changes When Casemapped | Yes |
| Changes When NFKC Casefolded | Yes |
| Changes When Titlecased | Yes |
| Changes When Uppercased | Yes |
| NFKC Casefold | "x" U+0078 Latin Small Letter X |
| NFKC Simple Casefold | "x" U+0078 Latin Small Letter X |
| 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 | Lower |