Ecommerce Operations
Calculate shipping costs, Amazon FBA fees, COGS, and optimize your ecommerce operations. Tools built by operators who understand the complexity of multi-channel selling.
Ecommerce margins are thin, and every cost matters. Our ecommerce operations calculators help you calculate Amazon FBA fees, compare shipping carriers, track COGS, optimize fulfillment costs, and understand the true profitability of selling online.
Whether you're evaluating a new product to sell on Amazon, comparing USPS vs UPS shipping rates, calculating landed costs from suppliers, or determining if dropshipping makes sense for your business, these calculators give you accurate answers. Built by ecommerce operators who understand the complexity of multi-channel selling.
From FBA fee calculations to shipping cost comparisons, each tool is designed to help you optimize operations and maximize profit margins. All calculators are 100% free, no signup required.
Available Tools
Ready to use - free, no signup required
Ecom OS
Profitability calculator & business metrics dashboard
Amazon FBA Calculator
FBA fees, referral fees & net profit per unit
Inventory Turnover Calculator
Inventory turnover ratio, DSI & benchmarks
Shopify Fee Calculator
Exact Shopify fees and net revenue by plan
DTC Unit Economics Simulator
Multi-market traffic, unit economics & LTV simulator
Why Ecommerce Operations Matter
Operational efficiency is what separates thriving ecommerce businesses from those that barely break even. Small improvements in shipping costs, fulfillment fees, or COGS can dramatically impact your bottom line when multiplied across hundreds or thousands of orders.
Amazon FBA fees can make or break product profitability. Many sellers launch products without fully understanding the fee structure—only to discover that after FBA fees, referral fees, and storage costs, their margins are razor-thin or negative. Our calculators help you model profitability before you source inventory.
Shipping costs vary dramatically between carriers and package sizes. USPS might be cheapest for small lightweight items, while UPS Ground could be better for heavier packages. DHL excels at international shipping. Knowing which carrier to use for each order type saves money and improves delivery times.
COGS (Cost of Goods Sold) is your foundational metric. Understanding true landed cost—including product cost, international shipping, duties, customs, and domestic freight—allows you to price accurately and forecast margins realistically. Many sellers forget to include all costs and overpromise profitability to themselves and investors.
Dropshipping and fulfillment models each have tradeoffs. Dropshipping offers low upfront costs but thin margins. FBA provides fast shipping but charges storage and fulfillment fees. 3PL warehouses give you control but require minimum volumes. Our tools help you compare models objectively based on your specific situation.
Frequently Asked Questions
Common questions about ecommerce operations calculators and tools
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