amazon.calculator is a generic term that could refer to various Amazon tools designed to help sellers with calculations related to costs, profits, and fees. These calculators are essential for evaluating business performance and making informed decisions. Some popular calculators include the FBA calculator, which estimates fulfillment fees, and the profit margin calculator, which helps sellers determine their potential earnings based on product costs and selling prices. These tools play a key role in helping sellers stay competitive and profitable in the fast-paced Amazon marketplace.