Web/JavaScript/Reference/Global objects/Math/LOG2E

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

<math display="block">\mathtt{Math.LOG2E} = \log_{2}(e) \approx 1.442</math>

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

Description

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).

Examples

Using Math.LOG2E

The following function returns the base 2 logarithm of e:

function getLog2e() {
  return Math.LOG2E;
}

getLog2e(); // 1.4426950408889634

Specifications

Specification
ECMAScript (ECMA-262)The definition of 'Math.LOG2E' in that specification.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
`LOG2E`	Chrome Full support 1	Edge Full support 12	Firefox Full support 1	IE Full support 3	Opera Full support 3	Safari Full support 1	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0	nodejs Full support 0.1.100

Legend

Full support: Full support