About fba.tools

fba.tools is a free toolkit for Amazon FBA sellers. We build calculators and estimators to help sellers understand their numbers — profit margins, fulfilment fees, VAT obligations, advertising ROI, inventory restock timing, and more.

All tools are free to use and require no account or sign-up. We support 22 Amazon marketplaces including the UK, Germany, France, Spain, Italy, Netherlands, Poland, Sweden, Belgium, Canada, Australia, US, Japan, India, Brazil, Mexico, UAE, Saudi Arabia, Egypt, Turkey, Singapore, and Ireland.

Fee data is reviewed and updated regularly to reflect the latest Amazon FBA fulfilment and referral fee schedules for each marketplace.

Our tools

• FBA Profit Calculator — estimate net profit after all fees
• FBA Fee Calculator — break down fulfilment and referral fees
• VAT Calculator — calculate VAT liability across EU and global marketplaces
• ACoS Calculator — measure advertising cost of sale
• RoAS Calculator — calculate return on ad spend
• Margin Calculator — find your gross and net margins
• Break-Even Calculator — find the minimum price to cover costs
• Wholesale ROI Calculator — assess wholesale sourcing profitability
• Restock Calculator — plan inventory replenishment timing
• Revenue Estimator — estimate monthly sales from BSR rank

Contact

Questions, feedback, or suggestions? Reach us at hello@fba.tools.