Math.cbrt()

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.cbrt() static method returns the cube root of a number. That is

𝙼𝚊𝚝𝚑.𝚌𝚋𝚛𝚝(𝚡)=x3=the unique y such that y3=x\mathtt{\operatorname{Math.cbrt}(x)} = \sqrt[3]{x} = \text{the unique } y \text{ such that } y^3 = x

Try it

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

console.log(Math.cbrt(1));
// Expected output: 1

console.log(Math.cbrt(Infinity));
// Expected output: Infinity

console.log(Math.cbrt(64));
// Expected output: 4

Syntax

js
Math.cbrt(x)

Parameters

x

A number.

Return value

The cube root of x.

Description

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

Examples

Using Math.cbrt()

js
Math.cbrt(-Infinity); // -Infinity
Math.cbrt(-1); // -1
Math.cbrt(-0); // -0
Math.cbrt(0); // 0
Math.cbrt(1); // 1
Math.cbrt(2); // 1.2599210498948732
Math.cbrt(Infinity); // Infinity

Specifications

Specification
ECMAScript® 2027 Language Specification
# sec-math.cbrt

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
cbrt
Chrome – Full support
Chrome 38 (Release date: 2014-10-07)
footnote Full support
Edge – Full support
Edge 12 (Release date: 2015-07-29)
footnote Full support
Firefox – Full support
Firefox 25 (Release date: 2013-10-29)
footnote Full support
Opera – Full support
Opera 25 (Release date: 2014-10-15)
footnote Full support
Safari – Full support
Safari 8 (Release date: 2014-10-16)
footnote Full support
Chrome Android – Full support
Chrome Android 38 (Release date: 2014-10-08)
footnote Full support
Firefox for Android – Full support
Firefox for Android 25 (Release date: 2013-10-29)
footnote Full support
Opera Android – Full support
Opera Android 25 (Release date: 2014-10-16)
footnote Full support
Safari on iOS – Full support
Safari on iOS 8 (Release date: 2014-09-17)
footnote Full support
Samsung Internet – Full support
Samsung Internet 3 (Release date: 2015-04-10)
footnote Full support
WebView Android – Full support
WebView Android 38 (Release date: 2014-10-08)
footnote Full support
WebView on iOS – Full support
WebView on iOS 8 (Release date: 2014-09-17)
footnote Full support
Bun – Full support
Bun 1 (Release date: 2023-09-08)
footnote Full support
Deno – Full support
Deno 1 (Release date: 2020-05-13)
footnote Full support
Node.js – Full support
Node.js 0.12 (Release date: 2015-02-06)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also