# MS Excel: PI Function (WS)

Learn how to use the Excel **PI function** with syntax and examples.

## Description

The Microsoft Excel **PI function** returns the mathematical constant called pi, which is 3.14159265358979.

## Syntax

The syntax for the Microsoft Excel **PI function** is:

PI( )

### Parameters or Arguments

There are no parameters or arguments for the **PI function**.

## Applies To

The **PI function** can be used in the following versions of Microsoft Excel:

- Excel 2013, Excel 2011 for Mac, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000

## Type of Excel Function

The **PI function** can be used in Microsoft Excel as the following type of function:

- Worksheet function (WS)

## Example (as Worksheet Function)

Let's look at some Excel PI function examples and explore how to use the **PI function** as a worksheet function in Microsoft Excel:

Based on the spreadsheet above, the following Excel **PI examples** would return:

=PI() | would return 3.141592654 |

=PI() * A1 | would return 59.69026042 |

=PI() / A2 | would return 0.184799568 |

=PI() + A3 | would return -9.858407346 |