WooCommerce Hooks & Filters

Explore WooCommerce action hooks and filters for product pages, cart totals, checkout fields, and orders, with concise explanations and PHP examples.

Actions run your PHP callback at a defined point in WooCommerce. Filters pass a value to your callback and expect you to return the value, with or without changes. Both are types of WordPress hooks.

Hook	Type	Category	Description
`woocommerce_before_single_product_summary`	Action	Product pages	Run code before the classic product summary appears.
`woocommerce_single_product_summary`	Action	Product pages	Add content among the default product details and purchase controls.
`woocommerce_product_tabs`	Filter	Product pages	Change the array of product tabs and their settings.
`woocommerce_loop_add_to_cart_link`	Filter	Shop listings	Filter the add-to-cart link HTML used in classic product loops.
`woocommerce_before_calculate_totals`	Action	Cart	Inspect or change cart items before totals are calculated.
`woocommerce_cart_calculate_fees`	Action	Cart	Add conditional fees while WooCommerce calculates cart fees.
`woocommerce_checkout_fields`	Filter	Checkout	Adjust field definitions in the classic shortcode checkout.
`woocommerce_order_status_changed`	Action	Orders	React when an order moves from one status to another.

This independent reference is maintained by HoverCraft. For implementation details and newly added hooks, consult the official WooCommerce hook index and check the compatibility notes on each page.