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E-commerce & Online Selling Cost Calculators

Calculate online store startup costs, marketplace seller fees (Amazon, Etsy, eBay, Shopify), product pricing and margins, fulfillment and shipping expenses, and sales metrics with 40 practical e-commerce calculators.

Calculate Shopify and Amazon FBA seller fees, dropshipping net margins, product pricing formulas, box shipping dimensions, pick-and-pack fulfillment expenses, ROAS breakevens, and blended customer acquisition costs with our 44 free e-commerce cost calculators.

44 Implemented & Published Calculators•44 Live Interactive

Live Interactive Calculators (44)

Ready for instant calculation with step-by-step formulas

Inventory Holding Cost Calculator

Calculate the true annual carrying cost of warehouse inventory across capital financing, storage, insurance, shrinkage, and obsolescence.

Amazon FBA vs Shopify Fee Calculator

Compare referral and fulfillment fees against standalone merchant store processing costs.

Freight Dimensional Weight Calculator

Calculate DIM weight divisors for FedEx, UPS, and DHL air/ground shipments.

Import Duty Calculator

Calculate US customs import duties based on Harmonized Tariff Schedule (HTS) codes, Merchandise Processing Fees (MPF), Harbor Maintenance Fees (HMF), and CIF values.

Customs Duty Calculator

Calculate international border customs duties, special Section 301/232 trade tariffs, and licensed customs broker clearance charges.

E-commerce Website Cost Calculator

Calculate the total cost to launch and operate an online store, modeling platform subscriptions, store themes, credit card processing fees, and essential merchant apps.

E-commerce Startup Cost Calculator

Calculate the total initial capital required to launch an e-commerce business, including website development, initial inventory, LLC formation, and 3 months of operating reserves.

Online Store Cost Calculator

Calculate the total cost to launch and run an online retail store, combining platform subscriptions, domain, theme, merchant processing fees, and maintenance.

Monthly E-commerce Operating Cost Calculator

Track and forecast all recurring operational expenditures for an active e-commerce store, from advertising and SaaS apps to warehouse storage and packaging.

E-commerce Platform Cost Calculator

Compare the true cost of e-commerce platforms like Shopify, BigCommerce, or WooCommerce by factoring subscriptions, external transaction fees, and payment gateway rates.

E-commerce Subscription Cost Calculator

Audit your store recurring SaaS software app subscriptions, measure total monthly tech spend, and calculate software cost per order.

Online Store Maintenance Cost Calculator

Estimate annual online store maintenance budgets, developer retainer hours, security patching, backup automation, and bug fix contingency reserves.

E-commerce Business Budget Calculator

Plan your complete e-commerce financial budget with target percentage allocations for COGS, marketing, shipping, and fixed operating expenses.

Marketplace Fee Calculator

Calculate total selling fees, payment processing deductions, and net proceeds for any online marketplace with configurable commission rates.

Amazon Seller Fee Calculator

Calculate Amazon referral fees, FBA pick and pack fulfillment costs, monthly storage fees, and net profit for FBA and FBM merchant listings.

Etsy Seller Fee Calculator

Calculate official Etsy seller fees including the $0.20 listing fee, 6.5% transaction fee, 3% + $0.25 payment processing, and optional offsite ads.

eBay Seller Fee Calculator

Calculate eBay final value fees, per-order fixed fees, insertion fees, and optional promoted listings across standard selling categories.

Shopify Transaction Fee Calculator

Calculate Shopify monthly subscription fees, credit card processing rates, third-party payment surcharges, and potential savings with Shopify Payments.

Payment Processing Fee Calculator

Calculate merchant account credit card processing fees, flat transaction charges, net bank deposits, and effective fee percentages for single or batch sales.

Online Selling Commission Calculator

Calculate consignment fee splits, platform commission cuts, and seller net earnings for art, luxury resale, fashion consignment, and peer-to-peer marketplaces.

Marketplace Profit Calculator

Calculate net unit profit, profit margins, and break-even selling prices across Amazon, Etsy, eBay, and Walmart marketplaces after COGS, fees, and ad costs.

E-commerce Product Pricing Calculator

Calculate the optimal retail selling price for your e-commerce products based on manufacturing COGS, shipping, ad spend, merchant fees, and target profit margin.

Product Selling Price Calculator

Calculate selling prices by applying either a target gross margin percentage or markup on cost, with optional sales tax calculations.

E-commerce Profit Margin Calculator

Calculate both gross margin and net margin for your online retail products by factoring COGS, shipping, marketplace fees, and advertising.

E-commerce Markup Calculator

Calculate dollar markup, markup multipliers, and resulting profit margins from product cost, and benchmark against competitor pricing.

Dropshipping Profit Calculator

Calculate net profit, profit margins, maximum allowable ad spend (CPA), and break-even selling prices for AliExpress, CJ Dropshipping, or Zendrop orders.

Print on Demand Profit Calculator

Calculate net profit per order and profit margins for Printify, Printful, or Gelato apparel, mugs, and posters sold on Etsy, Shopify, or Amazon.

Wholesale to Retail Price Calculator

Calculate wholesale pricing and recommended retail MSRP based on product manufacturing costs using standard retail keystone markups.

E-commerce Break Even Calculator

Calculate how many monthly orders and total sales revenue your store must generate to cover fixed software, salaries, and operational overhead.

E-commerce Shipping Cost Calculator

Calculate carrier dimensional weight (DIM weight) vs actual scale weight, fuel surcharges, and residential delivery surcharges for parcel shipping.

Order Fulfillment Cost Calculator

Calculate 3PL or in-house fulfillment expenses including primary pick fees, multi-item pick charges, packaging materials, storage allocation, and postage.

Cost Per Order Calculator

Calculate the total fully loaded variable cost incurred on every shipped customer order, combining product COGS, postage, labor, payment fees, and ad CAC.

Packaging Cost Calculator

Calculate custom e-commerce packaging expenses per order and total monthly budgets across shipping boxes, custom mailers, tape, dunnage, and labels.

Pick and Pack Cost Calculator

Calculate warehouse pick-and-pack labor expenses per order based on hourly wages, labor tax burdens, pick duration, and packaging materials.

Returns Processing Cost Calculator

Calculate the true financial cost of customer e-commerce returns, including return shipping labels, inspection labor, unrefunded payment fees, and damaged inventory losses.

Cost Per Shipment Calculator

Calculate the total cost to ship individual parcels, combining carrier freight postage, box materials, packing labor, and parcel insurance.

E-commerce Revenue Calculator

Forecast monthly and annual e-commerce sales revenue based on store traffic, conversion rate, average order value (AOV), and customer return deductions.

Average Order Value Calculator

Calculate average order value (AOV), units per transaction (UPT), and average item price, and measure the revenue impact of increasing AOV by 10% or 20%.

Customer Acquisition Cost Calculator

Calculate blended customer acquisition cost (CAC), paid-only CAC, and Marketing Efficiency Ratio (MER) across ad spend, agency fees, and software tools.

E-commerce Customer Lifetime Value Calculator

Calculate customer lifetime value (CLV/LTV), gross profit LTV, and the vital LTV:CAC ratio based on repeat purchase frequency, AOV, and customer lifespan.

E-commerce Conversion Rate Calculator

Calculate store checkout conversion rates from visitors and orders, determine visitors needed per sale, and model the revenue impact of conversion rate optimization (CRO).

Return on Ad Spend Calculator

Calculate Return on Ad Spend (ROAS as a multiplier and percentage), break-even ROAS thresholds based on product margins, and net profit after ad spend.

E-commerce Return Rate Calculator

Calculate order return rate percentages, item-level return rates, net retained orders, and total financial loss from customer returns and restocking.

E-commerce Net Profit Calculator

Calculate comprehensive net profit and profit margins by factoring gross revenue, customer returns, product COGS, platform fees, shipping, and advertising.

Featured Cross-Category E-commerce & Selling Tools

Coordinate business LLC formation, retail sales tax compliance, website hosting costs, and consumer discounts.

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