Sellermetrics is a free suite of real-time profit calculators built to help online sellers know their numbers before they sell.
Too many sellers list products without fully understanding their true profitability. Platform fees, advertising spend, returns, and shipping costs can turn a seemingly profitable product into a loss. Sellermetrics exists to eliminate that guesswork.
We build simple, accurate, and always-free calculators so that any seller — whether you're just starting out or scaling to seven figures — can make data-driven decisions in seconds.
Good tools should be free, fast, and require no sign-up. Sellermetrics runs entirely in your browser — your data never leaves your device, there are no accounts to create, and there are no paywalls. Just open a calculator and start calculating.
Results update instantly as you type — no submit button, no waiting.
Each calculator uses up-to-date fee structures specific to Amazon FBA, Shopify, and more.
No accounts, no credit cards, no limits. Every tool is completely free to use.
Fully responsive — calculate profit on your phone, tablet, or desktop.
Four free tools covering the most popular e-commerce selling channels.
Calculate net profit and ROI for any product with custom revenue, cost, fees, ads, and shipping inputs.
Open CalculatorEstimate FBA fulfillment fees, referral fees, storage costs, and ad spend to find your true Amazon profit margin.
Open CalculatorAccount for Shopify plan transaction fees, Shopify Payments processing fees, and all selling costs in one place.
Open CalculatorCalculate dropshipping profit, ROI, and break-even point factoring in supplier cost, platform fees, and ad spend.
Open Calculator