About Furima Navi
Our Mission
Furima Navi is a Japanese website providing free tools for sellers on popular flea market platforms like Mercari, Yahoo Auctions, and Rakuma. We help sellers calculate profits, compare fees, find the cheapest shipping options, and optimize their listings.
This English version is designed to help non-Japanese speakers access the same powerful tools available on our main Japanese site.
Why English Version?
While our main site is in Japanese, we recognize that many people in Japan — including expats, international students, and visitors — use Japanese flea market apps but may find the language barrier challenging when calculating fees or understanding shipping options.
This English version provides the same essential tools to help everyone succeed on Japanese platforms.
Who Uses Our Tools
- •Casual sellers — Decluttering homes and selling unused items
- •Side business sellers — Managing multiple listings efficiently
- •Beginners — Learning how fees, shipping, and taxes work
- •Non-Japanese speakers — Accessing tools in English
Our Commitment
100% Free
All tools are completely free with no hidden costs.
No Registration
Use any tool instantly without creating an account.
Privacy First
All calculations happen in your browser. We never store your data.
Always Updated
Fee and shipping data kept current with platform changes.
Contact Us
Have questions, feedback, or suggestions? We would love to hear from you.
Contact Us →Ready to Start?
Check out our free tools for Mercari, Yahoo Auctions, and Rakuma.