U+00D8 "Ø" Latin Capital Letter O with Stroke Unicode Character
Unicode Version 17.0
Ø
U+00D8 "Ø" Latin Capital Letter O with Stroke is a distinct letter used in several alphabets, most notably in Danish, Norwegian, and Faroese, where it represents a close-mid front rounded vowel sound. It also appears in the International Phonetic Alphabet and is sometimes employed in mathematics and engineering as a symbol for diameter or empty set, though its linguistic origins tie it to Germanic language scripts. Visually, this character features a slanted line crossing through the uppercase letter O, distinguishing it from the plain O and giving it a unique typographic presence that can be confused with the similar-looking Greek letter phi or the mathematical slashed zero.
General Properties
| Code Point | U+00D8 |
| Version Added | 1.1 |
| Name | Latin Capital Letter O with Stroke |
| Unicode 1.0 Name | Latin Capital Letter O Slash |
| Block | Latin-1 Supplement |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
Encodings
| HTML Decimal Encoding | Ø |
| HTML Hex Encoding | Ø |
| UTF-8 Encoding | 0xC3 0x98 |
| UTF-16 Encoding | 0x00D8 |
| UTF-32 Encoding | 0x000000D8 |
| C/C++/Java Escape | \u00d8 |
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 | Ambiguous |
| Uppercase | Yes |
| Simple Lowercase Code Point | "ø" U+00F8 Latin Small Letter O with Stroke |
| Lowercase Code Point | "ø" U+00F8 Latin Small Letter O with Stroke |
| Simple Case Folding | "ø" U+00F8 Latin Small Letter O with Stroke |
| Case Folding | "ø" U+00F8 Latin Small Letter O with Stroke |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ø" U+00F8 Latin Small Letter O with Stroke |
| NFKC Simple Casefold | "ø" U+00F8 Latin Small Letter O with Stroke |
| 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 |