> For the complete documentation index, see [llms.txt](https://osl.mistium.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://osl.mistium.com/methods/numbers/rounding.md).

# Rounding

Methods that round a numeric value. They return a new value and never mutate.

#### `.round()` → `int`

Rounds to the nearest integer.

#### `.round(precision)` → `number`

Rounds to `precision` decimal places.

#### `.floor()` → `number`

Rounds down to the nearest integer.

#### `.ceiling()` → `number`

Rounds up to the nearest integer.

> The method is `.ceiling()`, not `ceil`. The standalone **function** form is `ceil(n)` - see [Built-in functions](/builtins/builtins.md).

```javascript
log (2.7).round()      // 3
log (3.14159).round(2) // 3.14
log (2.1).ceiling()    // 3
log (2.9).floor()      // 2
```