EcomCalcTools - Free ecommerce fee & profit calculators
EcomCalcTools helps online sellers estimate real profit after marketplace fees, ad spend, shipping, returns, and payment costs. It offers free calculators for Amazon, Etsy, Shopify, eBay, TikTok Shop, Walmart, Noon, Stripe, PayPal, marketing ROI, SaaS metrics, and more. Every calculation runs in the browser with documented sources, formulas, assumptions, and update dates.