jCalculator is an awesome jQuery plugin for calculator inputs.
What’s nifty about this tool is that you can add a calculator to almost any frame within a layout. Need a calculation in a search box? No problem.
The simple calculator design fits into a variety of aesthetics and performs all the basic functions you would expect, such as addition, subtraction, multiplication and division. The tool just pops up when the use navigates to the proper location on the screen. You figure and then keep figuring numbers using the keyboard or mouse with answers populating right on screen.
Plus jCalculator is easy to install and run. Just include the proper lines of code before the body tag close. (You can fin everything you need in the documentation.) Then call the plugin. That’s it!