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

𝙼𝚊𝚝𝚑.𝙴=e≈2.718\mathtt{Math.E} = e \approx 2.718
Property attributes of Math.E
Writableno
Enumerableno
Configurableno

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:

js
function getNapier() {
  return Math.E;
}

getNapier(); // 2.718281828459045

Specifications

Specification
ECMAScript® 2025 Language Specification
# sec-math.e

Browser compatibility

BCD tables only load in the browser

See also