--- title: How to Move ACF Fields into Custom Tables Without... description: ACF stores field data in wp_postmeta by default, which causes performance issues at scale due to table bloat, inefficient joins, and limited indexing. This... canonical: https://daily.dev/posts/how-to-move-acf-fields-into-custom-tables-without-breaking-anything-g13ivn8zb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to Move ACF Fields into Custom Tables Without Breaking Anything | daily.dev og:description: ACF stores field data in wp_postmeta by default, which causes performance issues at scale due to table bloat, inefficient joins, and limited indexing. This... og:url: https://daily.dev/posts/how-to-move-acf-fields-into-custom-tables-without-breaking-anything-g13ivn8zb og:image: https://api.daily.dev/og/posts/G13IVN8zb.png og:image:alt: How to Move ACF Fields into Custom Tables Without Breaking Anything og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How to Move ACF Fields into Custom Tables Without Breaking Anything **[ACF](https://daily.dev/sources/acf)** · 11 min read · 2 upvotes · 0 comments ## Summary ACF stores field data in wp_postmeta by default, which causes performance issues at scale due to table bloat, inefficient joins, and limited indexing. This guide explains how to redirect ACF reads and writes to custom database tables using hooks like acf/update_value, acf/load_value, and acf/delete_value, while keeping standard functions like get_field() and update_field() fully operational. It covers table structure planning, incremental migration strategy, handling repeaters and relationships, multi-site compatibility, and how to completely stop writing to wp_postmeta without downtime. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [How to Add WordPress Custom Post Type Fields](https://daily.dev/posts/how-to-add-wordpress-custom-post-type-fields-6uycqm78t) · ACF · 2 upvotes · 0 comments - [How to Build a Custom ACF Search Filter in WordPress](https://daily.dev/posts/how-to-build-a-custom-acf-search-filter-in-wordpress-9zhkbnx8j) · ACF · 2 upvotes · 0 comments - [How WooCommerce Custom Product Data Flows From Admin to Frontend](https://daily.dev/posts/how-woocommerce-custom-product-data-flows-from-admin-to-frontend-0r4mtunqy) · ACF · 0 upvotes · 0 comments - [Extending the 7.0 Cycle](https://daily.dev/posts/extending-the-7-0-cycle-y7rm3qe1p) · Make WordPress Core · 8 upvotes · 0 comments - [How to Use ACF Custom Fields in the Block Editor Without Coding](https://daily.dev/posts/how-to-use-acf-custom-fields-in-the-block-editor-without-coding-3lspgypcr) · ACF · 4 upvotes · 0 comments --- Tags: [#database](https://daily.dev/tags/database), [#php](https://daily.dev/tags/php), [#wordpress](https://daily.dev/tags/wordpress) [View this post on daily.dev](https://daily.dev/posts/how-to-move-acf-fields-into-custom-tables-without-breaking-anything-g13ivn8zb) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How to Move ACF Fields into Custom Tables Without Breaking Anything","url":"https://daily.dev/posts/how-to-move-acf-fields-into-custom-tables-without-breaking-anything-g13ivn8zb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-to-move-acf-fields-into-custom-tables-without-breaking-anything-g13ivn8zb"},"datePublished":"2026-03-02T08:12:16.752Z","dateModified":"2026-03-02T08:12:43.312Z","description":"ACF stores field data in wp_postmeta by default, which causes performance issues at scale due to table bloat, inefficient joins, and limited indexing. 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