Last updated:
ylishi.tools is a free online tools platform built specifically for Amazon FBA sellers and cross-border e-commerce entrepreneurs. We provide 20+ calculators and analyzers that help sellers make data-driven decisions — from profit calculation and PPC analysis to fee simulation and listing optimization.
Unlike paid alternatives, ylishi.tools requires no account registration, no login, and no credit card. Simply open a tool and start calculating.
ylishi.tools was born from a real seller's frustration. Our founder, Yuwen Chen, spent 8 years as an Amazon FBA seller and 14 years in cross-border e-commerce. During that time, he encountered the same pain points every seller faces:
Instead of accepting this as normal, Yuwen built the tools he wished existed — fast, accurate, and completely free.
Accuracy is our top priority. Here's how we ensure our tools deliver reliable results:
Our tools serve sellers at every stage of their journey:
We serve sellers in 50+ countries, with specialized support for US, EU, UK, Japan, and emerging marketplaces.
Have questions, suggestions, or feature requests? We'd love to hear from you.
ylishi.tools is a free online tools platform designed for Amazon FBA sellers and cross-border e-commerce entrepreneurs. We offer 20+ calculators and analyzers covering profit calculation, PPC analysis, fee simulation, listing optimization, and more — all without requiring account registration.
Yes, all core tools on ylishi.tools are completely free. No signup, no login, and no credit card required. We offer 12+ free tools including FBA Profit Calculator, PPC Analyzer, Fee Simulator, and Review Analyzer. Our PRO tools offer enhanced features but core functionality remains free.
Our calculators are based on Amazon's officially published FBA fee rates and are updated daily with the latest fee changes. The FBA Profit Calculator accounts for all known fee categories including inbound configuration, storage, fulfillment, and return reserves. Exchange rate data is sourced from real-time forex markets and updated every 5 minutes.
ylishi.tools was founded in 2025 by Yuwen Chen, an 8-year Amazon FBA seller with 14 years of cross-border e-commerce experience. The platform was built to solve the pain points the founder encountered as a seller — complex fee calculations, scattered data, and expensive paid tools.
ylishi.tools supports Amazon marketplaces worldwide including US, UK, Germany, France, Italy, Spain, Netherlands, Poland, Sweden, Japan, Canada, Australia, and more. Our EU FBA Calculator specifically compares fees across all European marketplaces with Pan-EU and EFN support.
Start using our free tools today — no signup required.
Try Free Tools →