WooCommerce AJAX Cart is a WordPress Plugin that changes the default behavior of WooCommerte Cart Page, allowing a buyer to see the Total price calculation when change the Quantity of a product, without need to manually click on “Update cart” button. This improves the user experience when purchasing a product. No other hacks/code/theme changes is needed, this functionality is added when the plugin is activated. Free version features: Automatically reload and recalculate Cart using AJAX when quantity changes Show -/+ buttons around item quantity on cart page Show item quantity as select instead numeric field Show user confirmation when change item quantity to zero Premium version features: Allow to change/synchronize quantities in shop, minicart and single product pages view demo Make the Add to cart button to perform with AJAX, without full page reload view demo Faster AJAX reload call when change quantities in Cart page Option to lock quantity inputs to allow only change using plus and minus buttons Update price vs quantity calculation automatically on Single Product pages If you looking for a related plugin with more complete features maybe you can try WooCommerce Better Usability plugin.