files/en-us/web/javascript/reference/global_objects/math/sqrt2/index.md

metadata

title: Math.SQRT2
short-title: SQRT2
slug: Web/JavaScript/Reference/Global_Objects/Math/SQRT2
page-type: javascript-static-data-property
browser-compat: javascript.builtins.Math.SQRT2
sidebar: jsref

The Math.SQRT2 static data property represents the square root of 2, approximately 1.414.

{{InteractiveExample("JavaScript Demo: Math.SQRT2", "shorter")}}

function getRoot2() {
  return Math.SQRT2;
}

console.log(getRoot2());
// Expected output: 1.4142135623730951

Value

$$\mathrm{𝙼𝚊𝚝𝚑.𝚂𝚀𝚁𝚃𝟸}=\sqrt{2}\approx 1.414\backslash mathtt\{Math.SQRT2\}\; =\; \backslash sqrt\{2\}\; \backslash approx\; 1.414$$

{{js_property_attributes(0, 0, 0)}}

Description

Math.SQRT2 is a constant and a more performant equivalent to Math.sqrt(2).

Because SQRT2 is a static property of Math, you always use it as Math.SQRT2, rather than as a property of a Math object you created (Math is not a constructor).

Examples

Using Math.SQRT2

The following function returns the square root of 2:

function getRoot2() {
  return Math.SQRT2;
}

getRoot2(); // 1.4142135623730951

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{jsxref("Math.pow()")}}
• {{jsxref("Math.sqrt()")}}