送料計算/利益計算アプリ MerCalc

This free app is designed for market app, auction, resale, and product sales users. It allows you to find the cheapest shipping method from 66 services (updated October 1, 2025) from 11 companies, including Mercari, Rakuma, Yahoo! Auctions, PayPay Flea Market, Mobaoku!, minne, Japan Post (Post Office), Yamato Transport (Kuroneko Yamato), Sagawa Express, Ecohai, and Ecomu.

■Features
- Find the cheapest shipping method for your desired item.
- Reduce shipping costs even further with the size reduction suggestion feature.
- Calculate profit/profit margin based on sales price, commission (automatic calculation), shipping cost, and cost, allowing you to set a selling price that will not result in a loss. (You can also reverse-calculate the sales price from profit/profit margin. The difference in fees and shipping costs between Mercari, Flea Market, Yahoo! Auctions, and PayPay Flea Market is automatically calculated.)
- Use the ruler function to measure dimensions anytime, anywhere using your smartphone.
- Entered dimensions, weight, etc. are saved as a history. Since the shipping information is saved, you can calculate shipping costs retroactively.

- Tracking is available for major delivery services (Yamato Transport (Kuroneko Yamato) / Japan Post (Japan Post Office) / Sagawa Express), so you can always be sure your package arrived safely.

- Supports cash-on-delivery delivery services and calculates shipping costs including handling fees.

- Easily enter the dimensions of major envelopes and cardboard boxes.

- Share shipping calculation results with friends via email or social media.

■ Websites that introduce MerCalc's features and operation:
- Appliv: https://android.app-liv.jp/004261798/
- All About: https://allabout.co.jp/gm/gc/476479/
- Lazy Saving Housewife.COM: https://zuborasyuhu.com/mercari/

In addition, MerCalc has been introduced by many market app, auction, and resale professionals, IT engineers, and app review sites.
https://mercalc.blogspot.com/search/label/app_rating

■Supported Delivery Services
□Mercari
- Easy Mercari Nekopos
- Easy Mercari Compact Takkyubin (Thin/Box-shaped)
- Easy Mercari Takkyubin
- Yu-Yu Mercari Yu-Packet
- ​​Yu-Yu Mercari Yu-Packet Post (Mini/Sticker/Box-shaped)
- Yu-Yu Mercari Yu-Packet Plus
- Yu-Yu Mercari Yu-Pack
- Packaging & Shipping Tanohimeru
□Rakuma
- Easy Rakuma Pack Nekopos
- Easy Rakuma Pack Compact Takkyubin (Thin/Box-shaped)
- Easy Rakuma Pack Takkyubin
- Easy Rakuma Pack Yu-Packet
- ​​Easy Rakuma Pack Yu-Packet Post (Mini/Sticker/Box-shaped)
- Easy Rakuma Pack Yu-Packet Plus
- Easy Rakuma Pack Yu-Pack
□Yahoo! Auctions/PayPay Flea Market
- ​​Easy Nekopos Delivery (Seller/Buyer Pays)
- Easy Takkyubin Compact Delivery (Slim/Box-shaped) (Seller/Buyer Pays)
- Easy Takkyubin Delivery (Seller/Buyer Pays)
- Trusted Delivery
- Easy Yu-Packet Delivery (Seller/Buyer Pays)
- Easy Yu-Packet Post (Mini/Sticker/Box-shaped) (Seller/Buyer Pays)
- Easy Yu-Packet Plus Delivery (Seller/Buyer Pays)
- Easy Yu-Pack Delivery (Seller/Buyer Pays)
□Mobaoku!
- Mobaoku! Easy Flat-Rate Yu-Packet Delivery
- Mobaoku! Easy Flat Rate Yu-Pack
□minne
- Easy Minneko Pack Nekopos
- Easy Minneko Pack Takkyubin Compact (Thin/Box-shaped)
- Easy Minneko Pack Takkyubin
□Japan Post
- Mini Letter (Postal Letter)
- Standard Mail
- Non-Standard Mail (Standard/Non-Standard)
- Smart Letter
- Letter Pack Light
- Letter Pack Plus
- Click Post
- Yu-Mail (Standard)
- Yu-Packet
- ​​Yu-Pack
- Heavyweight Yu-Pack
□Yamato Transport
- Kuroneko Yamato Takkyubin (Updated October 1, 2025)
- Kuroneko Yamato Takkyubin Compact (Thin/Box-shaped)
□Sagawa Express
- Hikyaku Takkyubin
□Eco-Hai
- Eco-Hai (National Edition)
□Ecomoobin
- Ecomu Delivery

■ Usage Notes/Disclaimer
- While we take great care to ensure the accuracy of shipping calculations, please contact us if you notice any errors.
- Please note that the provider (Yas) assumes no responsibility for any damages incurred as a result of using this app.

■ Latest Information
Blogger: https://mercalc.blogspot.com/
Facebook: https://www.facebook.com/YasDevAcc/
Twitter: https://twitter.com/YasDevAcc
LINE: https://lin.ee/qlw0327

■ Update History
https://mercalc.blogspot.com/search/label/%E3%83%AA%E3%83%AA%E3%83%BC%E3%82%B9%E6%83%85%E5%A0%B1
https://mercalc.blogspot.com/search/label/Release Information