U+03DF "ϟ" Greek Small Letter Koppa Unicode Character
Unicode Version 17.0
ϟ
U+03DF "ϟ" Greek Small Letter Koppa is a numeric symbol derived from the archaic Greek alphabet, where it originally represented the sound /k/ before back vowels and served as the numeral for 90 in the ancient Greek acrophonic numbering system. In modern contexts, it is rarely used in standard Greek writing but appears in scholarly editions of classical texts, mathematical notation, and as a stylistic character in various digital encodings. Its uppercase counterpart is U+03DE "Ϟ", and the character belongs to the Greek and Coptic block of Unicode.
General Properties
| Code Point | U+03DF |
| Version Added | 3.0 |
| Name | Greek Small Letter Koppa |
| Block | Greek and Coptic |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
Encodings
| HTML Decimal Encoding | ϟ |
| HTML Hex Encoding | ϟ |
| UTF-8 Encoding | 0xCF 0x9F |
| UTF-16 Encoding | 0x03DF |
| UTF-32 Encoding | 0x000003DF |
| C/C++/Java Escape | \u03df |
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 |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ϟ" U+03DE Greek Letter Koppa |
| Simple Titlecase Code Point | "Ϟ" U+03DE Greek Letter Koppa |
| Uppercase Code Point | "Ϟ" U+03DE Greek Letter Koppa |
| Titlecase Code Point | "Ϟ" U+03DE Greek Letter Koppa |
| Cased | Yes |
| Changes When Casemapped | Yes |
| Changes When Titlecased | Yes |
| Changes When Uppercased | Yes |
| Script | Greek |
| Script Extensions | Greek |
| 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 | Lower |