Amazon, eBay, Etsy, and Shopify fee calculators. Browse our free marketplace fees tools below — all calculators are instant, accurate, and require no sign-up.
Amazon ACoS Calculator — Calculate your Amazon Advertising Cost of Sales (ACoS). Enter ad spend and ad revenue to find your ACoS percentage and determine if campaigns are profitable.
Amazon FBA Fee Calculator — Calculate Amazon FBA fees including fulfillment, monthly storage, referral fees, and net profit per unit for any product category and size tier.
Amazon Referral Fee Calculator — Calculate Amazon referral fees by product category. See the exact percentage (8‒15%) and minimum fee ($0.30) applied to your sale price.
Break-Even ACoS Calculator — Calculate your break-even ACoS on Amazon. Enter sale price, COGS, FBA fees, and referral fee to find the maximum ACoS for profitable advertising.
Amazon Seller Profit Calculator — Calculate your Amazon seller profit after FBA fees, referral fees, advertising spend, and shipping costs. See net profit and margin per unit.
eBay Seller Profit Calculator — Calculate eBay seller profit after final value fees, promoted listing fees, payment processing, and shipping costs. See net margin per item.
eBay Final Value Fee Calculator — Calculate eBay final value fees based on sale price, shipping, and category. See the exact fee amount and effective rate for your listings.
E-commerce PPC Budget Calculator — Calculate the ideal daily and monthly PPC budget for your e-commerce products. Plan ad spend based on target sales, CPC, and conversion rate.
Marketplace Profit After Fees Calculator — Calculate net profit after COGS, platform fees, payment processing, shipping, and advertising on any marketplace. See true per-unit profit.
Etsy Seller Profit Calculator — Calculate your Etsy net profit after listing, transaction, payment processing, and shipping fees. See true margin for handmade goods.
Multi-Channel Fee Comparison Calculator — Compare net profit across 7 e-commerce channels: Amazon FBA, Amazon FBM, eBay, Etsy, Shopify, Walmart, and TikTok Shop. Find the most profitable channel.
Price Split Calculator — See how a sale price is split between you, the marketplace, and the payment processor. Visualize seller take rate and net payout per transaction.
Seller Fee Comparison Calculator — Compare selling fees side by side across Amazon, eBay, Etsy, Shopify, Walmart, and TikTok Shop. See which marketplace gives you the best net.
Refund Impact & Fee Loss Calculator — Calculate the true cost of refunds: lost product, non-refundable fees, and shipping. See how refund rate affects your monthly profit and margins.
Sponsored Product Bid Calculator — Calculate the maximum CPC bid for Amazon Sponsored Products. Enter your target ACoS, sale price, and conversion rate to find the optimal bid amount.
Shopify Transaction Fee Calculator — Calculate Shopify transaction fees by plan: 0–2% transaction fee plus payment processing (2.4–2.9% + $0.30). Compare plans side by side.
TikTok Shop Fee Calculator — Calculate TikTok Shop seller fees including commission rates, payment processing, and affiliate commissions. Estimate your net profit per sale on TikTok Shop.
TACoS Calculator (Total Advertising Cost of Sales) — Calculate your Total Advertising Cost of Sales (TACoS). Measure ad spend as a percentage of total revenue to evaluate overall advertising efficiency.