For a number's mathematical sign, see Sign (mathematics). The symbol # is known as the number sign, [1]hash, [2] and (in North America) the pound sign[3] and has a variety of other names.

number sign, versatile symbol (#) most commonly used to preface numbers (e.g., apartment #1) but which encompasses a variety of other uses, especially to tag (or hashtag) posts and messages on …

The number sign (#) is a typographical symbol that represents the word “number” in American English and in Canada. Generally placed immediately before a number or series of digits (with no spaces), it …

Dec 17, 2025 · The number sign is the formal name for the symbol # in Unicode and typography standards. That name matters because it separates the symbol from its many informal aliases.

The standard notation for this class uses the number sign symbol, not the sharp sign from music, but it is pronounced "sharp P". More generally, the number sign may be used to denote the class of counting …

Because № isn’t on a standard English keyboard, you usually insert it from a symbol tool (or use a Word shortcut). Click any symbol to copy it. (№ is different from No., #, and N°.) Just type N + o + . Not the …

Click here to learn about using the number sign ( # ) in the English language. The number sign is also called the pound sign, pound key or hash.

Number sign is a name for the symbol #, which is used for a variety of purposes, including the designation of a number (for example, "#1" stands for "number one").

The number sign is the formal name for the symbol # in typography and standards such as Unicode, where it is officially designated U+0023 NUMBER SIGN (pronounced /ˈnʌmbər saɪn/) and used to …

Feb 6, 2020 · The "#" symbol has many names: number sign, hash sign, pound sign, octothorpe. But when should you use it in your writing? Check out our blog to find out.