Browse free open source C# Calculators and projects below. Use the toggles on the left to filter open source C# Calculators by OS, license, language, programming language, and project status.

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  • 1
    Windows Calculator

    Windows Calculator

    A simple yet powerful calculator that ships with Windows

    Calculator is the open source version of the Microsoft Windows Calculator application. It is a modern Windows app written in C++ and C#, offering standard, scientific, and programmer modes, unit/currency conversion, date calculations, and history/memory operations. It ships preinstalled with Windows and is actively developed on GitHub. Standard Calculator functionality, which offers basic operations and evaluates commands immediately as they are entered. Scientific Calculator functionality, which offers expanded operations and evaluates commands using the order of operations. Programmer Calculator functionality, which offers common mathematical operations for developers, including conversion between common bases.
    Downloads: 92 This Week
    Last Update:
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  • 2
    RPNcalculator
    Nice looking calculator using Reverse Polish Notation (RPN) written for Windows. It supports DEC, HEX, BIN, OCT numbers, GRAD, RAD and DEG.
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    Downloads: 15 This Week
    Last Update:
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  • 3
    IP Subnet Calculator
    Administration of large networks could be a very time-consuming work. So this program should represent a comfortable solution for calculating subnets in IPv4-networks. First fo all it is designed for Windows but also executable under Linux/Mono.
    Downloads: 17 This Week
    Last Update:
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  • 4
    A powerfull tool to work with math functions. At this stage of progress it's draw 2D graphs and 3D graphs of any function. Also have very easy to use calculator which can calculate complicate expressions.
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    Downloads: 21 This Week
    Last Update:
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    MC34063 Universal Calculator

    A calculation tool for the MC34063

    If you ever worked with the MC34063 Switching Controller, you know what a pain it is to calculate all the part values. This tool is an universal tool to help you with this process. You can calculate any standard application, such as step-up, step-down, inverting and step-up-down. PS: I would be happy about any (positive xD) reviews as well as any bugreports, comments or feature requests that you might have!
    Downloads: 7 This Week
    Last Update:
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  • 6
    Codex - Development Kit
    Codex is a series of tools aimed at developers to make certain tasks painless and easier. Tools currently include: Clipboard History AES Encrypter Resolution Emulator FTP Client Image Converter Various IP Tools
    Downloads: 4 This Week
    Last Update:
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  • 7
    Tibi's Mathematics Suite

    Tibi's Mathematics Suite

    A suite of useful mathematical applications.

    The Tibi's Mathematics Suite is a package of various mathematical applications. Included in the package are: a scientific calculator, a graphing calculator, a matrix calculator, and a factorizator. Requirements: .NET Framework 4.0
    Downloads: 7 This Week
    Last Update:
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  • 8

    Ballistic Calculator

    Open Source Ballistic Calculator in C#

    !!! This project is currently CLOSED. There is a new version of API available under LGPL license at https://github.com/gehtsoft-usa/BallisticCalculator1 There is a new version of application in progress (ported to net framework 5.0) https://github.com/nikolaygekht/ballistic.calculator.app Ballisitic Calculator based on JBM's implementation 3-degree of freedom model, ported to C#, improved to support metric system and extended by some math from Litz's "Applied Ballistic" book. Calculator displays ballistic tables, graphs, comparison graph and reticle images. The application is free to use under GNU license
    Downloads: 6 This Week
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  • 9
    Full Calculator is a calculator with basic mathematical operations, but it has units conversions and temperature conversions too.
    Downloads: 3 This Week
    Last Update:
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  • 10

    LM555 Timer Calculator

    A Graphical Tool To Calculate Timer Components

    Many of us use LM555 timer chips to generate clocks, tones for model trains, and all sort of other uses. Calculating the values of the resistors and capacitor in the timing chain, along with the duty cycle for astable operation is a bit tedious on a calculator so I built this small forms based tool to make it easier. It even has the graphic of the chip and the pin numbers to make it easy to hook things up.
    Downloads: 3 This Week
    Last Update:
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  • 11
    Subnet Calculator

    Subnet Calculator

    Subnet Calculator

    Very simple subnet calculator written in C#. Designed to be lightweight and portable for quick daily usage. Feel free to contact me at orphamiel@yahoo.com if you wish to contribute.
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    Downloads: 3 This Week
    Last Update:
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  • 12
    BinaryCrypt

    BinaryCrypt

    Binary Conversion Calculator

    With BinaryCrypt, you can convert between regular text, binary, hexadecimal, octal decimal and decimal. You can convert only decimal (as of right now) to any base up to base 64. You can also save your converted text to a file or open a converted text file to decrypt the message, and perform basic arithmetic in binary. The git repo for the C# code is located at: https://github.com/m1r4g3/BinaryCrypt-.Net
    Downloads: 2 This Week
    Last Update:
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  • 13
    This is an Erlang B and C calculator. Used in call centers to predicted service quality. Erlang B is also used in network planning. Written in Visual Studio C#. Erlang C is used or modified in commercial workforce management software.
    Downloads: 2 This Week
    Last Update:
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  • 14
    NCalculator is a free calculator for the .NET platform, written in C#. The main goal of this project to create a modular program with a high-knowledge parser for evaulating mathematical expressions.
    Downloads: 2 This Week
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  • 15
    This calculates the buildings, production and defense costs for use on the game space4k.
    Downloads: 2 This Week
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  • 16
    A basic calculator designed for the visually impaired that recites the operations being performed as it does them. Future development to include voice recognition of calculator functions and more advanced engineering calculations. Pre-Alpha phase.
    Downloads: 2 This Week
    Last Update:
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  • 17
    STEMCalc IV - Mathematics Swiss Knife

    STEMCalc IV - Mathematics Swiss Knife

    The Fourth Edition of STEMCalc and the biggest one yet!

    +++DISCLAIMER+++ The project is still currently in beta, thus have bare functionality, and possible bugs. Anyone who can spare time and lend a helping hand as a beta-tester is very appreciated. Contact the author for more information. +++INTRO+++ STEMCalc IV is a simple, yet powerful, console-programmed calulator written in Java, performing one calculation with two numbers max at a time and other various functions. +++STORY+++ This is the fourth edition of the previously abandoned student project STEMCalcR. The project has never seen the light of day due to various bugs and lack of usability, even after attempts at reviving the project in the forms of STEMCalcR2 and R3Boot editions. Determined, not giving up, me, one of the original co-authors of STEMCalcR, has brought to you STEMCalc IV, the swiss knife of mathematics. I am determined to drive this project further, turning it into a powerful program , more than just your average calculator.
    Downloads: 1 This Week
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  • 18
    Helps you to verify the integrity of the files. Hash Calculator for files. Using: CRC32 MD5 RIPEMD-160 SHA-1 SHA-256 SHA-384 SHA-512 Update: Added CRC32 Now supports big files (more then 4Gb) *Requires .NET 4.5
    Downloads: 1 This Week
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  • 19
    This is a simple C# command line calculator. It evaluates arithmetic expressions and functions. Easy to extend. Features include factorials, powers, brackets, bracket normalization, polish notation, factorization, fields, and advanced error reporting.
    Downloads: 1 This Week
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  • 20
    Aster - Windows Calculator

    Aster - Windows Calculator

    Offline Windows calculator with scientific, programmer, unit and date

    Aster is a free, offline Windows calculator for everyday arithmetic, scientific expressions, programmer calculations, unit conversions and date arithmetic. It includes five modes: Standard, Scientific, Programmer, Converter and Dates. Features include searchable local history, reusable results, decimal memory, keyboard shortcuts, and light, dark and system themes. Calculations run locally without an account, payment or activation key. Aster is built with C# and Windows Forms on .NET 10. The portable Windows x64 package requires the .NET 10 Desktop Runtime. Extract the complete application ZIP and run Aster.exe.
    Downloads: 1 This Week
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  • 21

    CO2 Calculator

    Every PC user should know how much his Computer is polluting the World

    A freeware program that allows you to calculate the gramms of Dioxyde Carbon (CO2) produced by your computer. The CO2 gramms depends on the pc power and the energy source, that the user can choose between the Coal, Natural Gas and Solar and are calculated each second.
    Downloads: 1 This Week
    Last Update:
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  • 22
    Forex Assistant

    Forex Assistant

    Manage accounts, analyze trades, track strategies & stats , News & Cal

    Forex Assistant is a comprehensive Windows desktop application designed to support forex traders in every aspect of their trading journey. From essential trading calculators and market insights to powerful account and trade management, it brings everything you need into one intuitive platform. ๐Ÿ”‘ Main Features ๐Ÿงฎ Calculator Tools Profit/Loss Calculator Currency Converter Position Size Calculator Pips Calculator Margin Calculator ๐ŸŒ Market Insights Live Market News Economic Calendar ๐Ÿ“Š Account Manager Add multiple trading accounts with balance and custom descriptions. Track current balance, profit/loss, and drawdown (daily and total). Add and manage positions manually with full details: entry price, stop loss, take profit, volume, PNL, and notes. Add notes for every trade: describe the strategy used, whether the trade was emotional or technical. Import historical trades directly from MetaTrader HTML reports. ๐Ÿ“ˆ Trade Analysis & Insights
    Downloads: 1 This Week
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  • 23
    Length Conversion

    Length Conversion

    Small C# program for study purposes

    A simple meters to feet calculator made in C# with Windows Forms.
    Downloads: 1 This Week
    Last Update:
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  • 24
    A calculator written in C#.NET 3.5 that aims to be simple and usable. Future plans include functionality above and beyond that of the standard windows calculator. (Requires the .NET 3.5 framework)
    Downloads: 1 This Week
    Last Update:
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  • 25
    A scientific graphing calculator written in C#.NET. This is a no longer graded educational project. This project has been abandoned. See the latest news post for details.
    Downloads: 0 This Week
    Last Update:
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