E-commerce & Marketplace Calculators
Run the unit economics of online stores, marketplaces, and payment processing.
10 free calculators in this category
Amazon FBA Profit Calculator
Calculate Amazon FBA net profit per unit after referral fee, fulfilment fee, storage cost, and product cost from your selling price.
App Store Fee Calculator
Work out app store commission on annual revenue, comparing the standard rate against the reduced small-business and subscription rates.
Average Order Value Calculator
Calculate average order value (AOV) by dividing total revenue by number of orders — a widely used ecommerce performance metric.
Dropshipping Profit Calculator
Calculate dropshipping profit per sale by entering supplier cost, platform fees, ad spend, and shipping to see margin and net profit.
eBay Fee Calculator
Work out eBay selling fees on any sale: final value fee, payment processing and the fixed per-order charge, plus net revenue and take rate.
eBay Profit Calculator
Work out eBay net profit per sale after final value fees, payment processing and the shipping gap — what actually lands in your account.
Import Business Profit Calculator
Calculate import profit from units imported, supplier price, shipping, customs duty, and your selling price into the local market.
Marketplace Commission Calculator
Calculate marketplace total fees from commission, payment processing, listing, and advertising percentages applied to the sale price.
Payment Platform Fee Calculator
Calculate annual payment platform fees from monthly transaction volume and fee structure. Enter percentage fee and flat fee per transaction to see annual fees.
Return Rate Cost Calculator
Calculate the total cost of product returns from return rate, average order value, return processing cost, and restocking loss.
About E-commerce & Marketplace Calculators
Calculators for Amazon FBA, Shopify, Etsy, eBay, Stripe, Square, and PayPal fees; AOV, cart abandonment, dropshipping margins; print-on-demand, fulfilment, inventory carrying cost, EOQ, MOQ, reorder point, safety stock, return-rate cost, GMV, marketplace commission, subscription-box profit, shipping cost, and the other operational maths a seller runs daily. Inputs are your numbers; outputs are the per-order or annual figures that drive pricing and platform decisions.