Ecommerce Calculators
Thirty free tools for online sellers — marketplace fee calculators for Etsy, Amazon, eBay, and Shopify, profit and pricing calculators, print-on-demand estimators, and the marketing metrics that decide whether a store actually makes money. Fee rates are documented as published in October 2026, and every tool shows its math.
Browse by area
Etsy4 calculators: Etsy Break-Even, Etsy Fee, Etsy Pricing, and moreAmazon3 calculators: Amazon FBA, Amazon Profit, Amazon Seller FeeeBay2 calculators: eBay Fee, eBay ProfitShopify2 calculators: Shopify Fee, Shopify ProfitPrint on Demand3 calculators: Print on Demand Profit, Printful Profit, Printify ProfitPricing6 calculators: Break-Even, Discount, Markup, and moreMarketing6 calculators: Average Order Value, Conversion Rate, Customer Acquisition Cost, and moreOperations4 calculators: Inventory Turnover, Marketplace Fee Comparison, Sales Tax, and more
Popular tools
Etsy Profit CalculatorEtsy sale price minus every fee, your product cost and shipping — true net profit and margin per order.EtsyAmazon FBA CalculatorThe full FBA fee stack: referral, fulfillment, 3.5% fuel surcharge, storage and plan fees.AmazonProfit Margin CalculatorTurn revenue and costs into gross margin, net margin and markup-equivalent percentages.PricingeBay Fee CalculatoreBay final value fee, per-order fee, international and Promoted Listings — the true cost per sale.eBay
Frequently asked questions
More than the headline rate suggests. Etsy stacks a $0.20 listing fee, 6.5% transaction fee, and 3% + $0.25 payment processing — roughly 9.5% plus $0.45 per sale before ads. Amazon FBA typically consumes 30–35% of the sale price once referral, fulfillment, and storage fees stack. eBay charges 13.6% plus a per-order fee under managed payments. Our fee calculators use documented October 2026 rates and show every line item.
Margin is profit as a percentage of the selling price; markup is profit as a percentage of cost. A $20 cost sold for $30 has a 50% markup but only a 33.3% margin — mixing them up is one of the most common pricing mistakes sellers make. Use the profit margin calculator and markup calculator side by side until the distinction is second nature.
Start from your costs, not your competitors: product cost, shipping, marketplace fees, and ad spend, then add the margin you need. The product pricing calculator reverses the math — enter costs and target margin and it outputs the price you must charge. Always verify fee rates before finalizing, since marketplaces update them periodically.
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