The WPForms Calculations Addon allows users to build custom, interactive calculators with ease, using a flexible drag-and-drop builder. This addon is perfect for creating a variety of calculators such as mortgage and loan calculators, BMI and health calculators, financial calculators, order and quote forms, and much more. It is designed to compute totals, discounts, taxes, and shipping costs, providing instant results that dynamically change based on user input.