Math.LN2

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The Math.LN2 static data property represents the natural logarithm of 2, approximately 0.693:

Try it

function getNatLog2() {
  return Math.LN2;
}

console.log(getNatLog2());
// Expected output: 0.6931471805599453

Value

\mathtt{Math.LN2} = \ln(2) \approx 0.693

Property attributes of `Math.LN2`
Writable	no
Enumerable	no
Configurable	no

Description

Because LN2 is a static property of Math, you always use it as Math.LN2, rather than as a property of a Math object you created (Math is not a constructor).

Examples

Using Math.LN2

The following function returns the natural log of 2:

function getNatLog2() {
  return Math.LN2;
}

getNatLog2(); // 0.6931471805599453

Specifications

Specification
ECMAScript® 2026 Language Specification # sec-math.ln2

Browser compatibility

	Desktop					Mobile						Server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	Deno	Node.js
`LN2`	1	12	1	3	1	18	4	10.1	1	1.0	4.4	1.0	0.10.0