*Workflows › Reference › Functions › String*

# Length

> A function of the expression language. Category: String. `strLen`.

## Signature

```text
strLen(anyStringExpression)
```

## Where it can be used

Its result can be used where the editor expects a value of these types.

- number

More in [Functions](https://docs.filmo.io/workflows/data-and-expressions).

FUNCTION `strLen`

## Arguments

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `value` | text | Yes |  |

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Canonical URL: https://docs.filmo.io/workflows/reference/functions/strlen  
Last updated: 2026-10-25