Math.ceil()

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()")}}

```js interactive-example 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

```js-nolint
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()")}}