Also called a hash, number sign, or pound sign, the octothorpe is the typographical symbol "#" (two horizontal lines and two vertical lines, crossed).
Where is the hash key on the keyboard?
Below is an overview of a computer keyboard with the hash key highlighted in blue.
How to create the hash symbol
Creating the # symbol on a U.S. keyboard
Creating the # symbol on a smartphone or tablet
To create a hash on an Android smartphone or tablet, iPhone, or iPad, access the on-screen keyboard, access the numbers (123) section, and then the (#+=) or symbols (sym) section. Press your finger on the # symbol.
Creating the # symbol on keyboards outside of the U.S.
Computer users in other parts of the world, such as Italy can find the # symbol on a different key. In the picture below is a keyboard key with the # symbol on the same key as the à and ° key. To use this key hold down Alt and press the key.
How is the hash symbol used on a computer?
Below are examples of what uses the pound symbol on a computer.
- Indicates that the number it precedes is an ordinal (e.g., "#1" for "number one," meaning "first" or "best").
- In hashtags (e.g., #computer)
- In programming to identify a nonexecutable statement.
- In IRC chat an identifier of a channel. For example, #computerhope is the Computer Hope chat channel.