Free E-Commerce Seller Tools
Calculators, AI listing tools, and review analysis for online sellers. Every tool is free, runs without signup, and comes from the same platform that extracts how buyers actually talk.
Calculators
eBay Fee CalculatorItemized eBay fees and your real payout on any sale, computed live.Etsy Fee CalculatorEvery Etsy fee and your real take-home per order, computed live.Amazon FBA CalculatorReferral, fulfillment, and storage fees plus profit, margin, and ROI.Profit Margin CalculatorProfit, margin, and markup from a price and a cost, computed live.Markup CalculatorSelling price, profit, and margin from a cost and a markup percent.Customer Lifetime Value CalculatorEstimate CLV from order value, frequency, and customer lifespan.ROAS CalculatorReturn on ad spend from revenue and ad cost, as a clear multiple.Break-Even ROAS CalculatorThe ROAS your ads must clear to break even, from your margin.TACoS CalculatorAd spend as a share of total revenue, tracked as your brand grows.ACoS CalculatorAd spend as a share of ad-driven revenue, with the ROAS it maps to.