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Math.E

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.E static data property represents Euler's number, the base of natural logarithms, e, which is approximately 2.718.

Try it

function compoundOneYear(interestRate, currentVal) {
  return currentVal * Math.E ** interestRate;
}

console.log(Math.E);
// Expected output: 2.718281828459045

console.log((1 + 1 / 1000000) ** 1000000);
// Expected output: 2.718280469 (approximately)

console.log(compoundOneYear(0.05, 100));
// Expected output: 105.12710963760242

Value

\mathtt{Math.E} = e \approx 2.718

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

Description

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

Examples

Using Math.E

The following function returns e:

function getNapier() {
  return Math.E;
}

getNapier(); // 2.718281828459045

Specifications

Specification
ECMAScript® 2026 Language Specification> # sec-math.e>

Browser compatibility

	Desktop					Mobile							Server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS	Bun	Deno	Node.js
`E`	1	12	1	3	1	18	4	10.1	1	1.0	4.4	1	1.0.0	1.0	0.10.0