ACF Field Name Sanitizer
labels -> valid field_name values
Write the ACF field label and get the correct field name with <code>get_field()</code> and <code>the_field()</code> snippets ready to use. Prefix support for consistent naming across all field groups.
Field labels
ACF field names
Enter ACF field labels on the left
a-z 0-9 _
no spaces -> _
no hyphens -> _
starts with a letter or _
max 64 chars
no reserved PHP words
ACF Pro (Advanced Custom Fields) is the most widely used plugin for extending WordPress with custom fields. Each field has a human-readable label and a field name used in PHP code: the field name must be lowercase, without spaces or special characters, and unique within the field group.
- Converts automatically uppercase to lowercase
- Replaces spaces and hyphens with underscore
- Removes invalid characters
- Shows get_field() and the_field() snippets ready to paste into the PHP template
- Supports the convention with prefix (hero_, card_, seo_, etc.)