Math.exp()

The Math.exp() static method returns e raised to the power of a number. That is

{{InteractiveExample("JavaScript Demo: Math.exp()")}}

```js interactive-example console.log(Math.exp(0)); // Expected output: 1

console.log(Math.exp(1)); // Expected output: 2.718281828459 (approximately)

console.log(Math.exp(-1)); // Expected output: 0.36787944117144233

console.log(Math.exp(2)); // Expected output: 7.38905609893065

## Syntax

```js-nolint
Math.exp(x)

Parameters#

• x
• : A number.

Return value#

A nonnegative number representing e<sup>x</sup>, where e is the base of the natural logarithm.

Description#

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

Beware that e to the power of a number very close to 0 will be very close to 1 and suffer from loss of precision. In this case, you may want to use {{jsxref("Math.expm1")}} instead, and obtain a much higher-precision fractional part of the answer.

Examples#

Using Math.exp()#

Math.exp(-Infinity); // 0
Math.exp(-1); // 0.36787944117144233
Math.exp(0); // 1
Math.exp(1); // 2.718281828459045
Math.exp(Infinity); // Infinity

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• {{jsxref("Math.E")}}
• {{jsxref("Math.expm1()")}}
• {{jsxref("Math.log()")}}
• {{jsxref("Math.log10()")}}
• {{jsxref("Math.log1p()")}}
• {{jsxref("Math.log2()")}}
• {{jsxref("Math.pow()")}}