metadata
title: Math.ceil()
short-title: ceil()
slug: Web/JavaScript/Reference/Global_Objects/Math/ceil
page-type: javascript-static-method
browser-compat: javascript.builtins.Math.ceil
sidebar: jsref
The Math.ceil() static method always rounds up and returns the smallest integer greater than or equal to a given number.
{{InteractiveExample("JavaScript Demo: Math.ceil()")}}
console.log(Math.ceil(0.95));
// Expected output: 1
console.log(Math.ceil(4));
// Expected output: 4
console.log(Math.ceil(7.004));
// Expected output: 8
console.log(Math.ceil(-7.004));
// Expected output: -7
Syntax
Math.ceil(x)
Parameters
x- : A number.
Return value
The smallest integer greater than or equal to x. It's the same value as -Math.floor(-x).
Description
Because ceil() is a static method of Math, you always use it as Math.ceil(), rather than as a method of a Math object you created (Math is not a constructor).
Examples
Using Math.ceil()
Math.ceil(-Infinity); // -Infinity
Math.ceil(-7.004); // -7
Math.ceil(-4); // -4
Math.ceil(-0.95); // -0
Math.ceil(-0); // -0
Math.ceil(0); // 0
Math.ceil(0.95); // 1
Math.ceil(4); // 4
Math.ceil(7.004); // 8
Math.ceil(Infinity); // Infinity
Specifications
{{Specifications}}
Browser compatibility
{{Compat}}
See also
- {{jsxref("Math.abs()")}}
- {{jsxref("Math.floor()")}}
- {{jsxref("Math.round()")}}
- {{jsxref("Math.sign()")}}
- {{jsxref("Math.trunc()")}}