U00D6U00F6

Ö and ö are Latin letters that carry a diaeresis, used as distinct letters in several European alphabets. The two-letter sequence Öö simply combines the capital Ö with the lowercase ö. In Unicode, Ö is U+00D6 and ö is U+00F6; in UTF-8 they are encoded as C3 96 and C3 B6 respectively. HTML supports named entities Ö and ö as well as numeric references Ö and ö. In ISO-8859-1, the same code points occupy bytes 0xD6 and 0xF6.

Ö/ö occur in several languages, notably German, Swedish, Finnish, Turkish, and Hungarian. In German, Öl means oil. In Swedish, öl means beer and ön means island. In Finnish, ö is a separate vowel and öljy means oil. In Turkish, göl means lake. In many of these languages, Ö/ö are treated as a distinct letter with its own place in the alphabet (for example, Swedish places Ö at the end, after Z).

Phonetically, ö typically represents a close front rounded vowel [ø] or its long version [øː], varying by language and word. The umlaut or diaeresis marks a vowel-quality change rather than a mere accent. The distinction between Ö and ö is both orthographic and phonetic within a language’s system.

In computing, Ö/ö can be represented in normal forms with precomposed characters (Ö U+00D6, ö U+00F6) or decomposed as O U+0308 and o U+0308. Case mapping yields Ö from ö and vice versa. Proper font support and Unicode normalization ensure consistent rendering across platforms.

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