Simple Calculator is a lightweight addon that brings a simple calculator to your browser's toolbar popup. This addon, developed by chYer, provides a convenient way to perform basic mathematical operations without the need to open a separate calculator application.

The calculator interface is user-friendly and easy to use. With just a click on the toolbar button, you can open the popup and start typing your desired math operations. The calculator supports addition, subtraction, multiplication, and division. It also allows you to perform calculations with decimal numbers, rounding the results to a maximum of 7 decimal places.

One of the standout features of Simple Calculator is the option to input your calculations using either the keyboard or the embedded virtual keyboard in the popup UI. This flexibility ensures that you can perform calculations comfortably, regardless of your preferred input method.