# Length

## Description

This operation returns the number of Unicode characters in your input strings, that is to say, the number of visible characters they have. This includes multi-byte characters like emojis and accented characters.

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## Data types

These are the input/output expected data types for this operation:

### Input data

![](https://965373739-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkxZeV4nlXcIAjMGZxzLI%2Fuploads%2FExtApHuiMxiHgaNWDLb2%2Fimage.png?alt=media\&token=5f4e1372-a2db-4d7e-b81b-976507cac896) - Strings to be measured.

### Output data

![](https://965373739-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FkxZeV4nlXcIAjMGZxzLI%2Fuploads%2Fw3qA8xJ438hoEvAgDIRL%2Fimage.png?alt=media\&token=b581a17e-c8f9-4540-8fdd-fb66137e222a) - Number of Unicode characters in the input strings.

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## Example

Suppose you want to calculate the **length** of a series of strings. To do it:

1. In your Pipeline, open the required [Action](https://docs.onum.com/the-workspace/pipelines/actions) configuration and select the input **Field**.
2. In the **Operation** field, choose **Length**.
3. Give your **Output field** a name and click **Save**. You'll get the count of Unicode characters in each of your strings. For example:

```
hello world! -> 12
```

{% hint style="info" %}
You can try out operations with specific values using the **Input** field above the operation. You can enter the value in the example above and check the result in the **Output** field.
{% endhint %}


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