Free seller tools
Quick, honest calculators — no signup required. Every rate is editable so the math matches your product.
Amazon FBA Fee & Profit Calculator
Free Amazon FBA calculator: enter price and costs to see referral fees, FBA fulfillment fees, storage, true profit per unit, margin and ROI — every field editable.
eBay Fee & Profit Calculator
Free eBay fee calculator: estimate final value fees, per-order fees and Promoted Listings costs, and see your true profit per sale. All rates editable.
Shopify Fee & Profit Calculator
Free Shopify fee calculator: estimate payment processing fees, app costs and ad spend per order, and see your true profit per sale. Every rate editable.
See what Amazon owes you — free
Connect your seller account and get a free reimbursement audit. No credit card, keep 100% of what you recover.