Open Source Calculators
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Browse free open source Calculators and projects below. Use the toggles on the left to filter open source Calculators by OS, license, language, programming language, and project status.
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Melis Platform is an enterprise-grade Low Code Platform simplifying app creation, management, and delivery.Melis is a new generation of Content Management System and eCommerce platform to achieve and manage websites from a single web interface easy to use while offering the best of open source technology.
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Qalculate! is a multi-purpose desktop calculator for GNU/Linux (now ported to Mac via MacPorts). It is small and simple to use but with much power and versatility underneath. Features include customizable functions, units, arbitrary precision, plotting, and a user-friendly interface (GTK+). Qalculate! has now moved to GitHub (https://github.com/Qalculate). Get the latest version from http://qalculate.github.io/downloads.html.
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Simple Calculator
A simple calculator.
This is a simple calculator written in C++ with the Qt framework, without any extra features. A program for minimalists. -
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TTCalc is an open source bignum mathematical calculator. It features arithmetical functions, trigonometric functions, inverse trigonometric functions, hyperbolic functions, inverse hyperbolic functions, logical operators, logarithms and so on.
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Java multiprecision calculator
Multiprecision calculator
Multipresicion calculator, based on Bigdecimal Java class . It has a library (BigMath) that makes calculations with Bigdecimal. It has also an expression parser to parse the user input. It allows you to store user defined variables and functions . You can operate with them to be used for calculations or for creating new functions with composition. With the new version, you can also calculate the derivative of a function. JDK-17 compatibility -
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Java-Calculator
I believe it is the best tool for everone get it it's free.
Scientific Calculator includes the following features: * Traditional algebraic or RPN operation * Result history * Math Functions * Percentages * Binary, octal, and hexadecimal conversion * Large input/output display I believe it is the best tool for everone get it it's free. -
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This small script currently runs a simple desktop Calculator application. It currently supports the four operations. Simple to run and light on resources.
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Tiny Calculator is a command line calculator for developers. It can resolve a complex expression mixing decimal, esadecimal an binary number. The result is automatic converted in decimal, esadecimal ad binary format.
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cgtkcalc
A simple calculator for complex number calculation.
A simple scientific calculator for complex number calculation. It requires the GTK+ toolkit. -
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5NB THC Calculator
thc % calculator in homemade eddibles
this program will calculate the amount of THC in your home made eddibles, current version on has options for Flower and Concentrate -
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Angry Calculator
Angry calculator is a calculator java
In addition to standard calculator functions, you can perform trigonometric calculations, binary, decimal, hexadecimal. Are included in the calculation of the programs tables, fibonacci, factorial, random number, charting, statistic basic, fast random generator number 1-90, generation and a system for fast calculation of the percentage, calculating the perimeter and area of plane geometric figures. This is also a program to create constant and recall among other functions is also a mini file editor text. -
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Arrear_Pension_Calculator
Simple app for calculating arrear pension amount of a given period.
A simple Arrear Pension Calculator app written in python with GUI specifically Govt. employees (Central & State). This application calculates arrear (Due - Drawn) / overdrawn / recovery of pension between any given periods. This app is not associated with the Govt. This app is for informational purpose only. This project is open source under GNU public license v3.0 -
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Baculator is a Reverse Polish Notation (RPN) calculator program with an infinite scrollable stack and support for most common mathematical operations as well as some more esoteric operations. Available for Unix/Gtk+, Mac OS X, and MS Windows.
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Calx is a calculator program based on RPN (Reverse-Polish Notation) that allows you to compute complex mathematical expressions containing brackets, mathematical functions etc.
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Elemental Calculator
Customization Calculator
A hand crafted Calculator, made for customisation, fun and a mixed age-range of people. Download today! -
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Full Calculator is a calculator with basic mathematical operations, but it has units conversions and temperature conversions too.
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The GD Stock Portfolio Calculator is a Google Desktop gadget used to track how much your financial investments are worth.
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InvisiCalc
It's a calculator except it is invisible.
Ever wanted to do a sum without using a calculator? Wouldn't it be great to just type out say, 4*(3+2)/9, in any application and have it replaced by the result? InvisiCalc watches the clipboard for math expressions and calculates any that it finds for you to copy and paste the result! -
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Java Calculator
Simple, easy to use, easy to learn calculator developed in java swing
A simple calculator designed to perform calculations of your choice, Pro Calculator also comes with access to customization on buttons and number font. -
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KPNClac is a polish notation calculator intended to inspired by the HP48 Series calculators. It handles complex numbers and will someday handle matricies. The next current development version allows user programmable functions via python.
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Kalculate provides a user-friendly calculator for the average desktop user. Its focus is to develop features that make it friendly and usable instead of features that provide advanced mathematics.
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Programmable scientific desctop calculator, able to work in decimal, hex, octal and binary bitwise logical functions implemented
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The purpose of this project is to create a graphically pleasing alternative to the calculator that comes default with X11.
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Peso Calculator - Portal Clique
Calcule seu IMC e saiba se está dentro do Peso Ideal
Peso Calculator calcula e monitora de forma simples o seu Peso Ideal a partir da fórmula do Dr. Devine (1974) e Índice de Massa Corporal. Calcula também quantidade de energia que você gasta por dia quando em repouso pela Taxa Metabólica Basal ( TMB). É possível salvar os resultados do IMC para acompanhamento posterior e ver se engordou ou emagreceu. Recursos: Faz o cálculo do Peso Ideal através da fórmula Dr. Devine (1974); Faz o cálculo do Índice de Massa Corportal (IMC) de acordo com a Organização Mundial de Saúde; Faz o cálculo da Taxa Metabólica Basal (TMB) pela Equação de Harris Benedict onde é usada para obter o gasto calórico basal diário.