Compact floating calculator

About

Add a compact, floating calculator to any webpage—perfect for quick calculations while browsing.
This Firefox extension was inspired by the clean and efficient interface of https://web電卓.jp/, a popular web-based calculator in Japan.

With this extension, you can:

-Launch a simple calculator with one click

-Use it without switching tabs

-Perform basic arithmetic (+, –, ×, ÷) directly on any site

-Quickly close or reopen it as needed

-Enjoy a smooth, non-intrusive user experience

Whether you're comparing prices, working on online spreadsheets, or studying math, this calculator stays with you—right on the page.