Math.exp()

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

𝙼𝚊𝚝𝚑.𝚎𝚡𝚙(𝚡)=ex\mathtt{\operatorname{Math.exp}(x)} = \mathrm{e}^x

Try it

Syntax

js
Math.exp(x)

Parameters

x

A number.

Return value

A nonnegative number representing ex, 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 Math.expm1 instead, and obtain a much higher-precision fractional part of the answer.

Examples

Using Math.exp()

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

Specifications

Specification
ECMAScript Language Specification
# sec-math.exp

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
exp

Legend

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Full support
Full support

See also