> ## Documentation Index
> Fetch the complete documentation index at: https://learn.workflow.dog/llms.txt
> Use this file to discover all available pages before exploring further.

# Square Root

> Calculate the principal square root of a number.

The **Square Root** action returns the non-negative value that, when multiplied
by itself, equals the input.

## Inputs

| Input      | Type   | Required | Description                            |
| ---------- | ------ | -------- | -------------------------------------- |
| **Number** | Number | Yes      | A number greater than or equal to `0`. |

## Outputs

| Output   | Type   | Description                             |
| -------- | ------ | --------------------------------------- |
| **Sqrt** | Number | The principal square root of the input. |

For example, `81` produces `9`.

<Warning>Negative inputs are rejected.</Warning>