U+00DC "Ü" Latin Capital Letter U with Diaeresis Unicode Character
U+00DC "Ü" Latin Capital Letter U with Diaeresis is a vowel in several European alphabets, including German, where it represents a distinct sound formed by rounding the lips as for "U" while positioning the tongue as for "E". It is also used in languages such as Spanish, Catalan, and French to indicate that the "U" should be pronounced separately in letter combinations like "güe" and "güi". Originating from a medieval scribal practice of placing a small "e" above the letter to denote a sound change, the diaeresis or umlaut mark has become an integral part of modern orthography. This character has been available since the earliest versions of the Unicode standard, encoding a common typographic variant that supports consistent digital representation across global text systems.
General Properties
| Code Point | U+00DC |
| Version Added | 1.1 |
| Name | Latin Capital Letter U with Diaeresis |
| Unicode 1.0 Name | Latin Capital Letter U Diaeresis |
| Block | Latin-1 Supplement |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "U" U+0055 Latin Capital Letter U "̈" U+0308 Combining Diaeresis |
Encodings
| HTML Decimal Encoding | Ü |
| HTML Hex Encoding | Ü |
| UTF-8 Encoding | 0xC3 0x9C |
| UTF-16 Encoding | 0x00DC |
| UTF-32 Encoding | 0x000000DC |
| C/C++/Java Escape | \u00dc |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Uppercase | Yes |
| Simple Lowercase Code Point | "ü" U+00FC Latin Small Letter U with Diaeresis |
| Lowercase Code Point | "ü" U+00FC Latin Small Letter U with Diaeresis |
| Simple Case Folding | "ü" U+00FC Latin Small Letter U with Diaeresis |
| Case Folding | "ü" U+00FC Latin Small Letter U with Diaeresis |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ü" U+00FC Latin Small Letter U with Diaeresis |
| NFKC Simple Casefold | "ü" U+00FC Latin Small Letter U with Diaeresis |
| 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 |