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    The Math.LOG2E property represents the base 2 logarithm of e, approximately 1.442:

    Math.LOG2E=log2(e)1.442\mathtt{\mi{Math.LOG2E}} = \log_2(e) \approx 1.442

    Property attributes of Math.LOG2E
    Writable no
    Enumerable no
    Configurable no


    Because LOG2E is a static property of Math, you always use it as Math.LOG2E, rather than as a property of a Math object you created (Math is not a constructor).


    Example: Using Math.LOG2E

    The following function returns the base 2 logarithm of e:

    function getLog2e() {
      return Math.LOG2E;
    getLog2e(); // 1.4426950408889634


    Specification Status Comment
    ECMAScript 1st Edition. Standard Initial definition. Implemented in JavaScript 1.0.
    ECMAScript 5.1 (ECMA-262)
    The definition of 'Math.LOG2E' in that specification.
    ECMAScript 6 (ECMA-262)
    The definition of 'Math.LOG2E' in that specification.
    Release Candidate  

    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

    Document Tags and Contributors

    Contributors to this page: evilpie, Sheppy, Marcoos, fscholz, Mingun, ethertank,, Mgjbot, Maian, Dria
    Last updated by: Mingun,