U+FF81 "ﾁ" Halfwidth Katakana Letter Ti Unicode Character
Unicode Version 17.0
ﾁ
U+FF81 "ﾁ" Halfwidth Katakana Letter Ti is a typographic variant of the standard fullwidth katakana character "チ" (chi), encoded specifically for use in legacy computer systems and environments that required a fixed-width appearance, such as old terminal displays or certain text-based applications. It occupies half the horizontal space of a typical fullwidth character, reflecting its design for compatibility with halfwidth character sets that often included Latin letters and digits. This character is part of the Halfwidth and Fullwidth Forms Unicode block, and it represents the syllable "ti" (or "chi" in standard romanization) within the Japanese writing system.
General Properties
| Code Point | U+FF81 |
| Version Added | 1.1 |
| Name | Halfwidth Katakana Letter Ti |
| Block | Halfwidth and Fullwidth Forms |
| General Category | Other Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Narrow |
| Decomposition Mapping | "チ" U+30C1 Katakana Letter Ti |
Encodings
| HTML Decimal Encoding | ﾁ |
| HTML Hex Encoding | ﾁ |
| UTF-8 Encoding | 0xEF 0xBE 0x81 |
| UTF-16 Encoding | 0xFF81 |
| UTF-32 Encoding | 0x0000FF81 |
| C/C++/Java Escape | \uff81 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Halfwidth |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "チ" U+30C1 Katakana Letter Ti |
| NFKC Simple Casefold | "チ" U+30C1 Katakana Letter Ti |
| Script | Katakana |
| Script Extensions | Katakana |
| 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 | Katakana |
| Sentence Break | OLetter |