Updated: 05/04/2019 by Computer Hope

Plus may refer to any of the following:


1. When referring to a keyboard or symbol, the plus ( + ) is a symbol found on the same key as the equal sign that has a horizontal and vertical line crossing each other. In the picture to the right is an example of the plus symbol.

Where is the plus key on the keyboard?

Below is an overview of a computer keyboard with the plus key highlighted in blue on the main keyboard as well as the numeric keypad.

Plus key

How to create the + symbol

Creating the + symbol on a U.S. keyboard

To create a plus using a U.S. keyboard hold down the Shift key and press plus key, which is on the same key as the equals sign ( = ) and to the left of backspace.


The plus is easier to use on the numeric keypad with math formulas.

Creating the + symbol on a smartphone or tablet

To create a plus on a smartphone or tablet, open the keyboard and go into the numbers (123) and then (#+=) or symbols (sym) section and then press your finger on the ~ symbol.

What is a plus used for on a computer?

The plus key is most often used in programming and mathematics to add two or more numbers or as a programming operator.

Plus in a math formula

In a math formula a plus is used to represent an addition. For example, in the below formula you can see that 2 <plus> 1 is equal to 3.

2 + 1 = 3

A plus in a URL

In a URL the + is a common method used to represent a space, because spaces are not allowed in URLs.

Plus in a shortcut key

When describing a shortcut key, the plus symbol is used to indicate two or more keys pressed at the same time. For example, Ctrl+A indicates pressing the Ctrl key and the "a" key at the same time to select all text. The plus may also be used as a shortcut. For example, in your browser and other programs with zoom support you can press the Ctrl key and the plus key at the same time to zoom in on text or an image.

A plus in a regular expression

With a regular expression, a plus is used to match one or more times. For example, in the below regular expression, all occurrences of the letter "z" in the $example variable would be replaced with a single letter "a." In other words, "z" would become "a," "zz" would become "a," "zzz" would become "a," etc.

$example =~ /z+/a/g;

Increment a variable in programming

Two pluses next to each other in programming is a shorthand method of incrementing a variables value. For example, if you had a variable called $count that was equal to "10" and you wrote $count++; in many different programming languages it would increment by one and become "11."

Other places with the plus symbol

A plus symbol or a horizontal line crossing a vertical line is also a symbol used as an indication to increase, add, move down, or zoom in on software programs and hardware devices.

2. Plus is also an abbreviated version of Google+.

3. Short for Microsoft Plus!

Computer abbreviations, Hyphen, Keyboard terms