Free online calculators for ecommerce businesses. Calculate profit margins, platform fees, inventory turnover, and more.
Calculate affiliate marketing commissions and earnings. Free Affiliate Commission Calculator with EPC (Earnings Per Click) and conversion rate analysis.
Open Calculator →Calculate discounts and sale prices instantly. Free Discount Calculator tool with formula, examples, and step-by-step guide.
Open Calculator →Calculate inventory turnover ratio and DIO (Days Inventory Outstanding). Essential metrics for inventory management and cash flow optimization.
Open Calculator →Calculate ecommerce refund and return rates. Free Refund Rate Calculator with industry benchmarks, cost analysis, and customer satisfaction insights.
Open Calculator →Estimate shipping cost using destination, carrier, speed, actual weight, and dimensional weight. Compare USPS, UPS, FedEx, and DHL.
Open Calculator →Advanced Amazon FBA profit calculator with referral fee, FBA fee, storage fees, return rate, PPC spend, and monthly units.
Open Calculator →Compare Amazon FBA (Fulfillment by Amazon) vs FBM (Fulfillment by Merchant) costs and profitability side-by-side.
Open Calculator →Calculate dropshipping profit margins including product cost, shipping, ads, and platform fees.
Open Calculator →Calculate Shopify net margin with product cost, shipping, ad spend, payment fees, and monthly plan cost.
Open Calculator →Compare selling fees across Etsy, eBay, and Shopify side-by-side. Calculate net profit for all three marketplaces in 2026.
Open Calculator →Calculate Etsy selling fees including listing fee, transaction fee, and payment processing. See your net payout.
Open Calculator →Compare Etsy and eBay selling fees side-by-side. Calculate net profit for both marketplaces in 2026.
Open Calculator →Calculate eBay selling fees by category. Includes Final Value Fee, payment processing, and insertion fees.
Open Calculator →Running an online store requires constant number-crunching. Our ecommerce calculators help you make data-driven decisions on pricing, profitability, and inventory management.
Whether you're selling on Amazon, Shopify, eBay, Etsy, or your own platform, these tools calculate critical metrics like profit margins, platform fee comparisons, fulfillment cost analysis, and inventory turnover rates.
💡 Pro Tip:
Always calculate your break-even point before launching a new product. This ensures you know exactly how many units you need to sell to cover costs.
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Calculators tailored for Amazon, Shopify, eBay, Etsy, and TikTok Shop
Use on any device — phone, tablet, or desktop
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