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). 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.

Latest News (view all news items)

Calculator Database now available
Information about current and past pocket calculator models now available in our new calculator database!
Calc on Apple Mac (updated)
More info on running Calc on Apple Maccomputers.
Properties database updated.
List of devices
Not sure which version to download for your device? See our updated list of devices and which of our products they support.
Carbon Calculator finalist in Design IT competition
Calc help now available in Spanish
We now have a version of the Help File for the free version of Calc available in Spanish. Many thanks to Sr. José Luis Montero Castellanos who has done the translation and generously made it available for the benefit of Spanish speaking users of Calc.
Currency update file available for Calc
The currency update file can be downloaded by going to the Currency Update page and following the instructions.

If you are using Calc (any version) you can now download a properties file with up-to-date currency conversions.
Online calculators for running and photography
Online running calculator and photographic exposure calculator now available.
Calc Bundle
Calc on Windows and Pocket PC (Windows Mobile) bundled download now available.
Currency update properties file now available for download.

Articles

Kraftwerk: Pocket Calculator Pocket Calculator song by Kraftwerk, the German electro-synth pioneers
The 64-bit Question 64-bit and 32-bit computing compared
A First Calculator First calculator I owned; a Casio Mini with six digit VFD display.
Water-powered calculator Critical review of a "water powered" calculator that claims to be environmentally friendly.
Good design The timeless HP-12C, surely the greatest financial calculator of all time.
Carbon Calculator DesignIT Competition Entry Carbon Calculator DesignIT Competition Entry
Calculator accuracy Looking at and comparing the accuracy of computers and calculators.
DVDs - The Collectors Edition Collector's editions of DVDs - what are they? Who collects them?
Labour-saving - not Automatic staplers - are they worth the trouble?
Doomsday How to calculate the day you were born using the Doomsday method.
Thick and thin Sometimes it seems as though technology is going backwards...
Precedence What precedence does your calculator use?

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