WooCommerce Weight Based Shipping is a great plugin that allows you to calculate shipping based on the weight of the order. This plugin is available as a free plugin and as a paid plugin. <br><br>The free plugin is available on the WooThemes plugin repository. The paid plugin is available on the WooCommerce plugin repository. <br><br>The free plugin is simple to use and easy to set up. You just need to enter the weight of the order and the plugin will calculate the shipping cost. The paid plugin has more features and is easier to use. The paid plugin has a built-in shipping calculator that you can use to calculate shipping costs for different shipping methods.