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NumericalChameleon

Program: NumericalChameleon Version:2.1
Author: Open Source
Website: [ http://numericalchameleon.net/en/index.html ]
Download: [ 6.21 Mb ]
Requirements: Windows XP/Vista/7/8
Description: The NumericalChameleon is free, open source, platform-independent and comprehensive software in order to convert units with a precision of up to 1000 decimal places. It supports more than 5200 units in 93 categories, including not only all important physical units in categories like length, area, volume, electricity, magnetism, force, power, energy, pressure, mass, temperature, velocity, acceleration, radioactivity, fuel consumption, time, etc. but also useful units in non-standard categories like exchange rates, time zones, spoken numbers (literally and by audio), roman numerals, geographic coordinates, radixes, fractions, checksums, bits&bytes, screen resolutions, colorcodes, unicodes, international dial codes, calendar and holiday calculations and many more.
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Convert for Windows

Program: Convert for Windows Version:4.10
Author: Joshua F. Madison
Website: [ https://joshmadison.com/convert-for-windows/ ]
Download: [ 153 Kb ]
Requirements: Windows 95/98/ME/NT/2K/XP/Vista/7/8/10
Description: Convert is a free and easy to use unit conversion program that will convert the most popular units of distance, temperature, volume, time, speed, mass, power, density, pressure, energy, and many others, including the ability to create custom conversions!
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Calculator InchPro

Program: Calculator InchPro Version:1.0
Author: InchPro
Website: [ http://inchpro.com/software/about-programs/ ]
Download: [ 5.64 Mb ]
Requirements: Windows XP/Vista/7/8/10
Description: Calculator InchPro Decimail is designed to convert inches and other world units of measures. The program is designed as an offline complement to this site. All fractional values must be entered how decimal values, result also will be got how decimal value. The separator character of numbers is a point. For example 3.5 or 7.5 were separated by a point between them. Integers can be entered without a period, for example 5 or 10 but record 10. and 5. will not be a mistake also.
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WRPN Calculator

Program: WRPN Calculator Version:6.0
Author: Emmet Gray
Website: [ http://www.wrpn.emmet-gray.com/ ]
Download: [ 1.4 Mb ]
Requirements: Windows XP/Vista/7/8
Description: Windows Reverse Polish Notation (WRPN) is a public domain calculator for Microsoft Windows that is modeled after the Hewlett-Packard HP-16c. This is not a Hewlett-Packard product. WRPN uses Reverse Polish Notation, which uses the ENTER key instead of the "=" (equals) key. In addition to all the functions you'd expect from an ordinary calculator, WRPN also has many features specifically designed for the computer professional: * Floating point, Decimal, Hexadecimal, Octal, and Binary modes * Word sizes from 1-64 bits per word * Signed math (1's complement, 2's complement, unsigned) * Logical operators (and, or, xor, not, masks, etc.) * Bit-wise operators (shift, rotate, rotate with carry, etc.) * 32 storage registers * 4 position stack * 203 lines of program memory
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Calculator++

Program: Calculator++ Version:1.11
Author: Robert J. Morris
Website: [ http://www.iloc.com/products/calculator/index.html ]
Download: [ 1.8 Mb ]
Requirements: Windows XP/Vista/7/8
Description: Calculator is a cross-platform, arbitrary-precision, customizable, multifunction, scientific calculator. Using Calculator, you can perform any of the customary handheld or online calculator operations, and many more. While it serves as an excellent replacement for your operating system's built-in calculator, it also offers many powerful features that are not available together in any other handheld or computer-based calculator. Calculator++ supports over 25,000 units for conversion in an ever growing list of categories and units. Scientists, engineers, programmers, and students will find it a simple to use, yet powerful, tool.
Notes: Requires Java 6.0 or greater and a Java app launcher. Program is in .jar format. http://www.java.com/

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Photon

Program: Photon Version:1.3
Author: VB Gadgets
Website: [ http://vbgadgets.weebly.com/photon.html ]
Download: [ 715 Kb ]
Requirements: Windows XP/Vista/7/8/10
Description: Photon is a multifunctional, parametric graphing calculator.
Notes: Requires .NET 4.6 or greater.

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Unit Converter

Program: Unit Converter Version:N/A
Author: Stefan Trost
Website: [ http://www.sttmedia.com/unitconverter ]
Download: [ 882 Kb ]
Requirements: Windows XP/Vista/7/8
Description: With the help of the Unit Converter you can convert over 4500 units from 33 categories such as length, area, volume, mass, density, temperature, time, speed, acceleration, volume flow, kitchen measurements, information and storage, quantity, shoe size, energy, power, force, torque, pressure, frequency, electromotive force, electric current, electric charge, electrical resistance, luminous intensity, luminance, illuminance, radiation activity, radiation exposure, absorbed dose, radiation equivalent doese, angle and amount of substance. In addition it is possible to add custom units without any problems. The user defined units can be added to one of the existing categories or you can define your own new category for your units.
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QFormatConverter

Program: QFormatConverter Version:2.1
Author: VENEA.NET
Website: [ http://www.venea.net/web/qformatconverter ]
Download: [ 19 Kb ]
Requirements: Windows 2K/XP/Vista/7/8/10
Description: Q format configurable calculator (decimals values to q format values - used in DSP's).
Notes: Requires .NET 2.0 or greater.

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SimplyConvert

Program: SimplyConvert Version:1.0
Author: Openview Design
Website: [ http://www.openviewdesign.com/index.php?option=com_content&view=article&id=9&Itemid=129 ]
Download: [ 173 Kb ]
Requirements: Windows XP/Vista/7/8
Description: SimplyConvert is perhaps the easiest to use Unit Converter ever made. Simple, Direct and to the point.
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fx-Calc

Program: fx-Calc Version:4.7
Author: Hans Jörg Schmidt
Website: [ http://www.fx-calc.de/index_en.html ]
Download: [ 1.7 Mb ]
Requirements: Windows XP/Vista/7/8/10
Description: fx-Calc is actually one of the most advanced desktop calculators for Windows. The biggest advantage is the simple and intuitive handling of complex mathematical tasks. Starting with a familiar calculator window, it allows calculating self defined functions, sums and products. It takes for instance just a few clicks to run the Leibnitz iteration to calculate Pi. fx-Calc lets you define, analyse, visualise and calculate scientific functions and is a full featured replacement and/or enhancement of the old fashioned Windows calculator. In addition to calculation and visualization you can analyze and solve scientific functions and perform linear regression. Even if the Window concept may not look advanced, it provides the big advantage of opening similar windows multiple times to compare the results as needed.
Notes: Requires .NET 4 or greater.

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Alternate Calculator

Program: Alternate Calculator Version:2.950
Author: Alternate Tools
Website: [ http://www.alternate-tools.com/pages/c_calculator.php?lang=ENG ]
Download: [ 718 Kb ]
Requirements: Windows 95/98/ME/NT/2K/XP/Vista/7/8/10
Description: A simple program for calclulations (incl. Euro-functionality). It contains an integrated editor and it is absolutly Freeware! This tools contains a currency editor where you can define own currencies to be used in your calculations.
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rpCalc

Program: rpCalc Version:0.7
Author: Doug Bell
Website: [ http://rpcalc.bellz.org/ ]
Download: [ 6.6 Mb ]
Requirements: Windows XP/Vista/7/8
Description: rpCalc started out as a little program written to try out various Python GUI toolkits. But I ended up using it all the time (it's much quicker to pull it up than to pull an actual HP calculator out of the desk), and I made several improvements. So I decided to make it available to others who also like RPN calculators.
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Sicyon calculator

Program: Sicyon calculator Version:5.0
Author: Teodor Krastev
Website: [ http://www.sicyon.com/calculator/about/index.htm ]
Download: [ 11 Mb ]
Requirements: Windows XP/Vista/7/8
Description: Sicyon is an all-in-one scientific calculator for every student or professor, researcher or developer - everybody doing physics or chemistry / science or engineering using formulas and tables of constants. It is easy-to-use and has everything you need to calculate or analyze expressions or program functions (VBScript™ / JScript™). Sicyon combines an intuitive interface and an object oriented approach to provide a fast learning curve while staying at a high level of efficiency.
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Karen's Calculator

Program: Karen's Calculator Version:1.2
Author: Karen Kenworthy
Website: [ http://www.karenware.com/powertools/ptcalc.asp ]
Download: [ 1.2 MB ]
Requirements: Windows XP/Vista/7/8
Description: Karen's Calculator is a high-precision calculator. Unlike ordinary calculators, it returns completely accurate results, even with operands containing thousands of digits. If you're patient, operands and results containing hundreds of thousands of digits are possble too! Most calculators are only accurate when dealing with numbers containing a few digits - usually 16 to 32. When asked to calculate using larger numbers, they either fail (displaying an error) or return results that are only approximately accurate. Karen's Calculator can easily handle numbers and results containing many thousands of digits with complete accuracy. It also includes an on-screen "tape" - which can be saved to disk - versatile memory features, and more!
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SpeedCrunch

Program: SpeedCrunch Version:0.11
Author: Helder Correia
Website: [ http://speedcrunch.org/ ]
Download: [ 3.4 MB ]
Requirements: Windows XP/Vista/7/8.0
Description: SpeedCrunch is a high-precision scientific calculator. It features a syntax-highlighted scrollable display and is designed to be fully used via keyboard. Some distinctive features are auto-completion of functions and variables, a formula book, and quick insertion of constants from various fields of knowledge. Available for Windows, OS X, and Linux in a number of languages.
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Microsoft Mathematics

Program: Microsoft Mathematics Version:4.0
Author: Microsoft
Website: [ http://www.microsoft.com/en-us/download/details.aspx?id=15702 ]
Download: [ 17.6 MB ]
Requirements: Windows XP/Vista/7/8.0
Description: Microsoft Mathematics provides a graphing calculator that plots in 2D and 3D, step-by-step equation solving, and useful tools to help students with math and science studies.
Notes: Requires .NET. 64bit available at site.

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Versaverter

Program: Versaverter Version:4
Author: PawPrint.net
Website: [ http://www.pawprint.net/vv/ ]
Download: [ 585 KB ]
Requirements: Windows XP/Vista/7/8.0
Description: Versaverter rapidly gained popularity world-wide as the fastest and most complete unit conversion utility around. The original version was written for Windows 2000 and did an admirable job but times have changed and we have began the process for propelling a new version of Versaverter into the modern era. The new version Versaverter 4 is a complete re-write of the application using the cross platform Adobe® AIR™ framework. We have retained all the key features that made Versaverter 3 such a success: Speed, extensive XML based library of units, automatic updates, and of course the free price tag! The new version adds to this a much improved user interface, cross platform compatibility, additional speed, and dynamic search.
Notes: Requires Adobe Air runtime. Info and download available on download page.

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EuroCalc

Program: EuroCalc Version:2.1
Author: AlexSofts
Website: [ http://homeusers.brutele.be/alexSofts/ ]
Download: [ 189 KB ]
Requirements: Windows XP/Vista/7/8.0
Description: EuroCalc is a very simple, small calculator that uses all European currencies.
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Microsoft Calculator Plus

Program: Microsoft Calculator Plus Version:1.0
Author: Microsoft Corp.
Website: [ http://www.microsoft.com/en-us/download/details.aspx?id=21622 ]
Download: [ 475 KB ]
Requirements: Windows XP/Vista/7/8.0
Description: Microsoft Calculator Plus allows you to complete many different types of conversions; it also includes all the mathematical functions offered in Microsoft Calculator.
Notes: Default skin is a bit ugly, but click the "View" menu then click "Classic View" to return to a normal windows interface.

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Calculator Prompter

Program: Calculator Prompter Version:2.7
Author: Softaddress
Website: [ http://www.softaddress.com/math_calculator/index.php ]
Download: [ 922 KB ]
Requirements: Windows XP/Vista/7/8.0
Description: Calculator Prompter is an expression calculator. You can evaluate expressions like floor((19+34/3)^3#2)%15 or sin(cos(tan(pi)))+e^3;. With this calculator you can enter the whole expression, including brackets, and operators. Calculator performs arithmetic, such as root (#) and power (^). It supports functions and constants.
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