There is a number of calculators out there, and you can find one for practically any purpose you may have. Your choice should depend on what you are using a calculator for, and what kind of calculations you plan on doing.


M.A.C Software

Canadian Wellsite Inc.,

FireCAD Technologies

Tadema Hvac Software

United Parcel Service of America, Inc.

Australian Tax Office


Christer Svensson

Bluefive software


Exsense Software

Tiffany Simpson

Jean-Pierre Bergamin, Hewlett-Packard community

Optimal Designs Enterprise

NYacad Inc.

Wheatworks Software, LLC

Kennaquhair Stringed Instruments

National Institute of Standards and Technology


Harukazu YOSHINO

Macromedia, Inc.

Stampede Entertainment.