Free Amazon Seller Calculators

No signup, no spreadsheet. Free calculators for Amazon sellers — use them here, or embed any of them on your own blog or site.

FBA Fee & Profit Calculator

Estimate Amazon's referral fee, FBA fulfillment fee, and net profit per unit from a sale price, category, and weight.

Plug in your real costs — COGS, Amazon fees, shipping, prep — and see net profit, margin, ROI, and break-even price.

Enter ad spend and ad sales to see ACOS and ROAS instantly, checked against your break-even ACOS.

This free demo shows you how to track important metrics and grow your business effectively.