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    Math.PI Redirect 1

    Summary

    The Math.PI property represents the ratio of the circumference of a circle to its diameter, approximately 3.14159:

    Math.PI=π3.14159\mathtt{\mi{Math.PI}} = \pi \approx 3.14159

    Property attributes of Math.PI Redirect 1
    Writable No
    Enumerable No
    Configurable No

    Description

    Because PI is a static property of Math, you always use it as Math.PI, rather than as a property of a Math object you created (Math is not a constructor).

    Examples

    Example: Using Math.PI

    The following function returns the value of pi:

    function getPi() {
       return Math.PI
    }
    
    getPi() // 3.141592653589793

    Specifications

    Specification Status Comment
    ECMAScript 1st Edition. Implemented in JavaScript 1.0 Standard Initial definition.
    ECMAScript Language Specification 5.1th Edition (ECMA-262) Standard  
    ECMAScript Language Specification 6th Edition (ECMA-262) Draft  

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
    Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

    See also

    • The Math object it belongs to.

    Document Tags and Contributors

    Contributors to this page: Sheppy
    Last updated by: Sheppy,