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.
TheMath.exp() static method returnse raised to the power of a number. That is
Try it
console.log(Math.exp(0));// Expected output: 1console.log(Math.exp(1));// Expected output: 2.718281828459 (approximately)console.log(Math.exp(-1));// Expected output: 0.36787944117144233console.log(Math.exp(2));// Expected output: 7.38905609893065Syntax
js
Math.exp(x)Parameters
xA number.
Return value
A nonnegative number representing ex, where e isthe base of the natural logarithm.
Description
Becauseexp() is a static method ofMath, you always use it asMath.exp(), rather than as a method of aMath object you created (Math is not a constructor).
Beware thate 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 useMath.expm1 instead, and obtain a much higher-precision fractional part of the answer.
Examples
Using Math.exp()
js
Math.exp(-Infinity); // 0Math.exp(-1); // 0.36787944117144233Math.exp(0); // 1Math.exp(1); // 2.718281828459045Math.exp(Infinity); // InfinitySpecifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-math.exp |