This awesome (and free) calculator also has a huge number of built-in constant values and a built-in conversion engine that can assist with common measurements. The thing that sets AllerCalc ( Figure E) apart from other calculators is its sheer number of built-in functions. It's worth noting that you must have Java installed on your computer to use Graphing Calculator 3D. The graphs are colorful and can be rotated, customized, and even exported. It can graph a wide variety of functions in either 2D or 3D. Graphing Calculator 3D ( Figure D) is a great tool for anyone who has to graph functions. Figure Cīiromsoft Calculator sells for $14.95, but a free trial version is available for download. With a simple click, the calculator becomes fully visible and ready to go. The interface fades and blends in with the desktop until you need it.

You can launch it from the system tray and once it's running, it occupies a minimal amount of desktop real estate. The good thing about this app is that it's designed to be accessible on demand. 3: Biromsoft Calculatorīiromsoft Calculator ( Figure C) is a basic calculator for performing arithmetic, square roots, and percentages, but not a lot more. This calculator's best feature is the integration of copy and paste buttons. It supports basic arithmetic as well as a few scientific functions, such as sin, cos, and tan.

Although its interface feels a bit cluttered, the application is lightweight and works well. Calc98 ( Figure B) is another free calculator.

Graphing calculator app for computer