Cart Weight Shipping Price is a Magento 2 extension developed by PIT solutions which will calculate shipping rates price per unit for a specified weight range. It helps the admin to create/add custom shipping rule methods from the admin panel. The admin can map the weight range to a price per unit. For example, the price per unit for weight range from 1 to 5 is $4 and the customer cart total weight is 3 lbs then the shipping price is 12(weight*price per unit). Also, you set a constant price per unit when no weight range.

Store owners utilizing this magento 2 extension will benefit by calculating their shipping costs based upon the total weight of the cart rather than having to rely on a predetermined shipping rate. Store Admins can create multiple weight-based pricing rules, which allow for automatic deductions based upon the total weight of each order placed but, will still allow the store owner to have fair shipping charges whether they are shipping a light order or a heavier order.

This extension allows the merchant to set up multiple weight brackets and then define a price per each weight bracket in terms of the number of units shipped. If neither of the defined weight brackets are applicable to a given order, a flat shipping cost per unit will be used to calculate shipping costs. By using this approach, it is guaranteed that shipping costs will always be calculated accurately, even if there are special circumstances. Additionally, a minimum shipping price can be established to avoid charging an unreasonably low price for very small orders. 

All configurations are setup directly in the Magento backend, which means that you do not need any technical expertise or programming skills to maintain this magento 2 extension. Any modification of your pricing rules will be visible immediately on your storefront. Overall, this extension gives store owners complete control over their shipping logic through an easy-to-use method of managing weight-based shipping costs.