U00C4

U+00C4, frequently written as the Unicode code point U+00C4, is the Latin Capital Letter A with Diaeresis. The character rendered is Ä. It is part of the Latin-1 Supplement block in Unicode (U+0080 to U+00FF). The lowercase form is U+00E4 (LATIN SMALL LETTER A WITH DIAERESIS). In UTF-8, U+00C4 is encoded as the two-byte sequence C3 84.

The decimal value of the code point is 196. This character is used in several European languages, where it typically represents a front rounded vowel. In German, Ä is an umlauted form of A; in Swedish, Finnish, and Estonian, Ä is treated as a distinct letter of the alphabet rather than merely a diacritic, influencing alphabetical ordering and standard spellings.

In computing and encoding contexts, U+00C4 can be represented in various forms. In HTML, the character can be written as Ä or as its numeric character reference Ä. In LaTeX, the diaeresis can be produced with specific commands for accented characters. In programming languages that support Unicode escapes, it can be represented as \u00C4 or \xC4 depending on the language.

Font support for Ä is widespread in modern environments, and it is included in virtually all Unicode-compliant fonts. Its usage and rendering are generally stable across modern operating systems and applications.