Know Your Real Profit Before You Sell
Free fee calculators for Amazon, Shopify, Etsy, eBay, and 7 more marketplaces. Stop guessing your margins. Calculate your exact fees and profit per sale.
Know your cash cushion: try the Sleep Well Number calculator.
How It Works
Three steps to understand your real profit
Pick Your Marketplace
Choose from 11 major ecommerce platforms including Amazon, Shopify, Etsy, eBay, and more.
Enter Product Details
Input your product price, cost of goods, and shipping cost. Select a category if applicable.
See Your Real Profit
Get an instant breakdown of all marketplace fees, your net profit, and profit margin percentage.
Choose Your Marketplace
Calculate fees and profit margins for any of these 11 ecommerce platforms
Go Deeper on Amazon Fees
Referral fees are just the start. These calculators cover the FBA charges that hide in your settlement reports.
FBA Storage Fee Calculator
Monthly cubic-foot charges, the Q4 rate jump, and aged inventory surcharges after 180 days.
Inbound Placement Fee Calculator
Compare minimal, partial, and Amazon-optimized shipment splits before you build a shipping plan.
FBA Reimbursement Calculator
What Amazon owes you for lost or damaged inventory, and the profit gap reimbursements never cover.
Compare Marketplace Fees
See how fees stack up side by side on the same product
Amazon Referral Fee Rates
Browse referral fee rates for every Amazon product category
How to Sell on Every Platform
Category-specific guides for selling on major ecommerce marketplaces
Tired of Manually Tracking FeesAcross Marketplaces?
Futureproof books every order, fee, and payout into one ledger: real margin per SKU and channel, settlements reconciled, books done. Six AI agents plus a monthly human specialist review, starting at $1,000/month.