# About calculation operators

Operators specify the type of calculation that you want to perform on the elements of a formula. Microsoft Excel includes four different types of calculation operators: arithmetic, comparison, text, and reference.

**Arithmetic operators** To perform basic mathematical operations such as addition, subtraction, or multiplication; combine numbers; and produce numeric results, use the following arithmetic operators.

Arithmetic operator |
Meaning (Example) |
---|---|

+ (plus sign) | Addition (3+3) |

– (minus sign) | Subtraction (3–1) Negation (–1) |

* (asterisk) | Multiplication (3*3) |

/ (forward slash) | Division (3/3) |

% (percent sign) | Percent (20%) |

^ (caret) | Exponentiation (3^2) |

**Comparison operators** You can compare two values with the following operators. When two values are compared by using these operators, the result is a logical value either TRUE or FALSE.

Comparison operator |
Meaning (Example) |
---|---|

= (equal sign) | Equal to (A1=B1) |

> (greater than sign) | Greater than (A1>B1) |

< (less than sign) | Less than (A1<B1) |

>= (greater than or equal to sign) | Greater than or equal to (A1>=B1) |

<= (less than or equal to sign) | Less than or equal to (A1<=B1) |

<> (not equal to sign) | Not equal to (A1<>B1) |

**Text concatenation operator** Use the ampersand (&) to join, or concatenate, one or more text strings to produce a single piece of text.

Text operator |
Meaning (Example) |
---|---|

& (ampersand) | Connects, or concatenates, two values to produce one continuous text value ("North"&"wind") |

**Reference operators** Combine ranges of cells for calculations with the following operators.

Reference operator |
Meaning (Example) |
---|---|

: (colon) | Range operator, which produces one reference to all the cells between two references, including the two references (B5:B15) |

, (comma) | Union operator, which combines multiple references into one reference (SUM(B5:B15,D5:D15)) |

(space) | Intersection operator, which produces on reference to cells common to the two references (B7:D7 C6:C8) |

The order in which Excel performs operations in formulas

Formulas calculate values in a specific order. A formula in Excel always begins with an equal sign (=). The equal sign tells Excel that the succeeding characters constitute a formula. Following the equal sign are the elements to be calculated (the operands), which are separated by calculation operators. Excel calculates the formula from left to right, according to a specific order for each operator in the formula.

**Operator precedence**

If you combine several operators in a single formula, Excel performs the operations in the order shown in the following table. If a formula contains operators with the same precedence — for example, if a formula contains both a multiplication and division operator — Excel evaluates the operators from left to right.

Operator |
Description |
---|---|

: (colon) (single space) , (comma) |
Reference operators |

– | Negation (as in –1) |

% | Percent |

^ | Exponentiation |

* and / | Multiplication and division |

+ and – | Addition and subtraction |

& | Connects two strings of text (concatenation) |

= < > <= >= <> | Comparison |

**Use of parentheses**

To change the order of evaluation, enclose in parentheses the part of the formula to be calculated first. For example, the following formula produces 11 because Excel calculates multiplication before addition. The formula multiplies 2 by 3 and then adds 5 to the result.

=5+2*3

In contrast, if you use parentheses to change the syntax, Excel adds 5 and 2 together and then multiplies the result by 3 to produce 21.

=(5+2)*3

In the example below, the parentheses around the first part of the formula force Excel to calculate B4+25 first and then divide the result by the sum of the values in cells D5, E5, and F5.

=(B4+25)/SUM(D5:F5)