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: 96 This Week
    Last Update:
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  • 2
    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: 22 This Week
    Last Update:
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  • 3
    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: 4 This Week
    Last Update:
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  • 4

    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: 9 This Week
    Last Update:
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  • 5
    Lamina ✦

    Lamina ✦

    Math on a Sheet of Glass! A WinUI 3 Calculator for Windows 11.

    Lamina ✦ is a WinUI 3 calculator that is not only includes a Regular Calculator but also something called "Scripties". She supports Mensuration, Finance, Currency Conversion, Unit Conversions And More!, making her a Very Extendable Option. Target OS: Windows 11 ONLY. | Latest Stable Version: v11.26100.15.0 App Execution Aliases : lamina.exe & lmna.exe What are Scripties? Scripties are High Performance GUI equivalents of Console Scripts, that are Reliable and Easy to Make. Install Lamina ✦ from Winget : winget install Lamina Version Structure : 11 -> Target OS ( She IS for Windows 11 ) 26100 -> Release SDK Version ( Currently She uses 26100.xxxx Versions of Windows 11 SDK ) 15 -> Release Index ( Here 15 stands for the 15th Release Of Course! ) 0 -> Filler Number ( Package.appxmanifest doesn't allow me to edit this Number so it's there for NOTHING 💀 )
    Downloads: 15 This Week
    Last Update:
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  • 6

    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: 8 This Week
    Last Update:
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  • 7
    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.
    Downloads: 7 This Week
    Last Update:
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  • 8
    Drilling Calculator, Calculate all your drilling numerical with least effort and most accuracy! (for student purpose only, not professional usage). Application developed on C#. (c) 2011, Chiradeep Gupta; University of Petroleum and Energy Studies.
    Downloads: 4 This Week
    Last Update:
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  • 9

    Eve Targeting Speed Calculator

    Targeting Speed Calculator for Eve Online

    Calculates Targeting speed from Scan Resolution and Signature Radius Signature Analysis is calculated as lvl5 Sensor Booster calculated as t2 with Scan Resolution script Sensor Amplifier calculated as t2
    Downloads: 4 This Week
    Last Update:
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  • 10
    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: 4 This Week
    Last Update:
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  • 11
    Hash Calculator

    Hash Calculator

    Simple Hash Calculator

    This program will allow you to manually type, or browse for a file on your system. You will then be able to generate a MD5, SHA256, or SHA512 hash digest of this file. This program requires no installation and is intended to be a simple, lightweight program. This is also my first open source project!
    Downloads: 2 This Week
    Last Update:
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  • 12
    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: 2 This Week
    Last Update:
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  • 13
    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. 🔑 Main Features 🧮 Calculator Tools Profit/Loss Calculator Currency Converter Position Size Calculator Pips Calculator Margin Calculator 🌍 Market Insights Live Market News Economic Calendar 📊 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. 📈 Trade Analysis & Insights
    Downloads: 2 This Week
    Last Update:
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  • 14
    Calculator for Hand Held CE devices. Wide range of functionality in a compact framework.
    Downloads: 2 This Week
    Last Update:
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  • 15

    Math Tools

    Provides useful mathematical tools which make your work much easier.

    Math Tools provides mathematical tools, allows you to calculate triangle propeties, and find both parametric and algebraic forms of planes. ------ More Tools Will be Added in The Future ------ ------ Translation to english will be completed soon ------
    Downloads: 2 This Week
    Last Update:
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  • 16

    RCLcalculators

    RCL, a simulator for Texas Instrument calculators from the 70's.

    Calculators became available in the early 70's, soon after the integrates circuits, and several companies were competing with each other for a share of this market. Texas Instruments was one of the bigger companies producing calculators. With RCL it is possible to recreate the TI calculators, strating with the Ti59e, with 960 program steps and a persistant memory (a combination of the the Ti58C and the Ti59). RCL offers any person interested in the ancient ones in calculators (more specific: TI calculators) an option to have your old calculator under your control again. Looking for user manuals? go to http://www.rskey.org/CMS/index.php/the-library/12 (The site owner does a great job at preserving the history and the documentation of calculators of the period.) RCL is targetting developers interested in applying the Von Neumann architecture and attributed grammars and developers with a need to do complex calculations in their applciacation.
    Downloads: 2 This Week
    Last Update:
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  • 17

    Insulin IP Calc

    Insulin infusion protocol calculator

    A simple, point of care, clinic decision support system (CDSS) Android app for Insulin infusion and hyperglycemia management in the ICU. The infusion protocol calculator is based on the updated "Yale Insulin Infusion Protocol" http://bit.ly/1DaVfUd and American Association of Clinical Endocrinologists (AACE) blood sugar targets. http://inpatient.aace.com/ . Source code requires Xamarin Studio & Android SDK to compile.
    Downloads: 1 This Week
    Last Update:
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  • 18
    Full Calculator is a calculator with basic mathematical operations, but it has units conversions and temperature conversions too.
    Downloads: 1 This Week
    Last Update:
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  • 19
    IPAbacus is an TCP/IP address calculator. Given an ip address and a subnet mask it will calc all the relevant information.
    Downloads: 1 This Week
    Last Update:
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  • 20
    This program converts dotted IP addresses to binary IP addresses and calculates variable length subnet mask with IP ranges, networks, broadcasts and gateways addresses.
    Downloads: 1 This Week
    Last Update:
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  • 21

    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: 1 This Week
    Last Update:
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  • 22
    A look angle calculator program. Includes precise calculations with optional magnetic variation, updatable satellite listings, and geographical data from USGS database. Input by city, zipcode, or coordinates.
    Downloads: 1 This Week
    Last Update:
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  • 23
    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: 1 This Week
    Last Update:
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  • 24
    Virtual Trainer

    Virtual Trainer

    A tool for personal trainers and fitness enthusiasts.

    Currently: *Source code now available in the form of a Visual Studio 2015 project (zipped).* 1) Calculate BMI, daily caloric intake, target heart rate, maximum and training poundage, and ideal proportions based upon joint measurements. 2) Record and recall measurements and progress using the Basic Information tab. 3) Create, Manage, Export, and Import custom foods/exercises lists using the appropriate tabs. 4) Store and recall workout and diet log records by date. Future Improvements (in the works): * Diet and Workout tab improved functionality.
    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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