# Length Node

## Description

Returns the length of input **In**. This is also known as magnitude. A vector's length is calculated with [Pythagorean Theorum](https://en.wikipedia.org/wiki/Pythagorean_theorem).

The length of a **Vector 2** can be calculated as:

![The square root of x squared plus y squared.](images/LengthNodePage02.png)

Where *x* and *y* are the components of the input vector. Length can be calculated for other dimension vectors by adding or removing components.

![The square root of (x squared plus y squared plus z squared).](images/LengthNodePage03.png)

And so on.

## Ports

| Name        | Direction           | Type  | Description |
|:------------ |:-------------|:-----|:---|
| In      | Input | Dynamic Vector | Input value |
| Out | Output      |   Float    | Output value |

## Generated Code Example

The following example code represents one possible outcome of this node.

```
void Unity_Length_float4(float4 In, out float Out)
{
    Out = length(In);
}
```