Calculator software and online resources

The Calculator Home Page at calculator.org is a collection of resources related to calculators. Over two million PC and handheld device owners around the world are using Calc, our popular engineering, scientific and financial calculator for Windows. The calculator includes functions for statistics, use of different number bases (binary, octal, hexadecimal and base-n), metric units conversions and physical properties and constants. It has financial functions including investment, loan and savings calculations. It also calculates time functions and has a stopwatch feature and RPN (Reverse Polish Notation). It runs on Microsoft Windows (WindowsNT, Windows95/98/ME, Windows2000/XP) and WindowsCE (Pocket PC). You can download the free version of Calc98 now, view the product documentation online, or see Windows version screenshots or Pocket PC version screenshots. The latest premium version 5.6 is available for immediate download for both Windows and Windows Mobile (Pocket PC) and also on CD with lots of extras. This version includes many new features and improvements, including better RPN logic and stack, fractions and feet/inches, an IP address calculator, and particle physics data.

Latest Calc 98 version 5.6 (available by paid download for both Windows and Windows Mobile/Pocket PC) shown with background image and custom font.

If you are not ready to install Calc98, you can still try our browser-based on-line calculator. The online version has many of the features of the more powerful Calc98. We have also put our comprehensive units conversion and constants database online.