# $field->upper()

Converts the field content to uppercase

****

- Source: <https://github.com/getkirby/kirby/tree/5.5.3/config/methods.php#L609>

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```php
$field->upper(): Kirby\Content\Field
```

## Return type

`Kirby\Content\Field`

This method modifies the existing `$field` object it is applied to and returns it again.


```php
<h1><?= $page->title()->upper() ?></h1>
```