Convert custom fields to tags, categories or taxonomy terms
As of April 2026, Custom Field Taxonomies is a WordPress meta plugin with 60 active installations and a 4.6/5 rating from 5 reviews. It has been downloaded 16K+ times in total. Requires WordPress 3.2+ and PHP false+. Available on WordPress.org since 2009. Last updated 13 years ago — may have compatibility concerns. Top alternative: Advanced Custom Fields (ACF®).
Custom fields are great for storing various meta data about a post. However, if you routinely need to display posts that have a certain custom field value, you should consider switching to a custom taxonomy, which is better suited for grouping posts.
With this simple plugin, you can convert all custom fields with a certain key to terms in a certain taxonomy, while maintaining the post association.
Note: If you’re looking for the old version, see Custom Query Fields
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| WordPress | 3.2+ requiredTested up to 3.4.2 |
| PHP | false+ required |
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