> For the complete documentation index, see [llms.txt](https://docs.tabula.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tabula.io/data-transformation/formulas/math-functions/sign.md).

# Sign

Returns the sign of a number.

```mathematica
Sign(5) → 1
Sign(-5) → -1
```

#### **Inputs**

`Sign(number)`

* `number` - A number expression

#### **Outputs**

Outputs -1 if number is negative, 0 if number is zero, or 1 if number is positive.