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: 113 This Week
    Last Update:
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  • 2
    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: 38 This Week
    Last Update:
    See Project
  • 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: 10 This Week
    Last Update:
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  • 4
    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: 21 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: 21 This Week
    Last Update:
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  • 6

    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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  • 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: 14 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: 10 This Week
    Last Update:
    See Project
  • 9
    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: 7 This Week
    Last Update:
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  • 10
    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: 6 This Week
    Last Update:
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  • 11
    BaY Hesap Makinesi

    BaY Hesap Makinesi

    C# ile kodlanmış standart bir hesap makinesi.

    C# ile kodlanmış standart bir hesap makinesi. Windows 10'un hesap makinesine benzetilmeye çalışılmıştır.
    Downloads: 2 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:
    See Project
  • 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:
    See Project
  • 14
    IPAbacus is an TCP/IP address calculator. Given an ip address and a subnet mask it will calc all the relevant information.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 15
    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: 2 This Week
    Last Update:
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  • 16
    Uptime Monitor and Power Calculator
    Written in C#, this small program is used to log computer uptime and downtime for purposes of calculating power consumption and costs as well as savings, where downtime is considered either standby or hibernate.
    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
    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
    Last Update:
    See Project
  • 19
    Texas Holdem Calculator
    A simple Texas Holdem calculator for Windows Mobile 5/6, Windows Phone 7, that helps calculating hand and pot odds.
    Downloads: 1 This Week
    Last Update:
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  • 20
    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
    Last Update:
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  • 21
    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
    Last Update:
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  • 22

    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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  • 23

    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: 1 This Week
    Last Update:
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  • 24

    Fekke's BMI calculator

    C# BMI Calculator with wizzard.

    An application written in C#, which will assist you in calculating your Body Mass Index.
    Downloads: 1 This Week
    Last Update:
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  • 25
    Calculator for Hand Held CE devices. Wide range of functionality in a compact framework.
    Downloads: 1 This Week
    Last Update:
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