Math.cosh()
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.cosh() static method returns the hyperbolic cosine of a number. That is,
Try it
console.log(Math.cosh(0));
// Expected output: 1
console.log(Math.cosh(1));
// Expected output: 1.543080634815244 (approximately)
console.log(Math.cosh(-1));
// Expected output: 1.543080634815244 (approximately)
console.log(Math.cosh(2));
// Expected output: 3.7621956910836314
Syntax
js
Math.cosh(x)
Parameters
x-
A number.
Return value
The hyperbolic cosine of x.
Description
Because cosh() is a static method of Math, you always use it as Math.cosh(), rather than as a method of a Math object you created (Math is not a constructor).
Examples
Using Math.cosh()
js
Math.cosh(-Infinity); // Infinity
Math.cosh(-1); // 1.5430806348152437
Math.cosh(-0); // 1
Math.cosh(0); // 1
Math.cosh(1); // 1.5430806348152437
Math.cosh(Infinity); // Infinity
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-math.cosh |
Browser compatibility
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