# Math.floor Function (JavaScript)

Returns the greatest integer less than or equal to its numeric argument.

## Syntax

```
Math.floor(number)
```

## Remarks

The required *number* argument is a numeric expression.

The return value is an integer value equal to the greatest integer less than or equal to its numeric argument.

**Applies To**: Math Object

## Requirements

Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported in Store apps (Windows 8 and Windows Phone 8.1). See Version Information.