Ø = Hold down the Control and Shift keys and type a / (slash), release the keys, hold down the Shift key and type an O.

Is O the same as O?

The name of this letter is the same as the sound it represents (see usage). Though not its native name, among English-speaking typographers the symbol may be called a “slashed O” or “o with stroke”. “ø” (lower case) is also used in the International Phonetic Alphabet to represent a close-mid front rounded vowel.

The slashed zero glyph is often used to distinguish the digit “zero” (“0”) from the Latin script letter “O” anywhere that the distinction needs emphasis, particularly in encoding systems, scientific and engineering applications, computer programming (such as software development), and telecommunications.

What is the letter o called?

Though not its native name, among English-speaking typographers the symbol may be called a “slashed o” or “o with stroke”. Although these names suggest it is a ligature or a diacritical variant of the letter o, speakers of languages which use the letter ø hold that it is not.

In many languages, the letter “ö”, or the “o” modified with an umlaut, is used to denote the non-close front rounded vowels [ø] or [œ]. In languages without such vowels, the character is known as an “o with diaeresis” and denotes a syllable break, wherein its pronunciation remains an unmodified [o].