JavaScript (ES2026) reference · Math Methods and Constants

JavaScript Math.hypot() Method

Return the square root of the sum of squares of its arguments, e.g. the length of a vector or a diagonal.

JavaScript (ES2026) Since ES2015

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Syntax

Math.hypot(value1, value2, /* …, */ valueN)

Parameter	Description
`values`	Numbers.

A number.

Vector lengthsTry it yourself

console.log(Math.hypot(3, 4), Math.hypot(1, 2, 2));

Output

5 3

Screen diagonalTry it yourself

const w = 1920, h = 1080;
console.log("diagonal in pixels:", Math.round(Math.hypot(w, h)));

Output

diagonal in pixels: 2203

Version	Change
JavaScript ES2015	Added

Math.sqrt() · Return the square root of a number, or NaN for negative numbers. Use it for distances and the Pythagorean theorem.
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