awesome-calculators

Advanced scientific calculator, with lots of features, for example result history and themes

Scientific calculator with modern, Google Material Design interface

Official calculator from Google

New, official calculator from Samsung

Calculate math problems using camera

Scientific calculator with realistic interface

Excellent emulation of the classic calculator

Emulate Texas Instruments graphing calculators on your device

Droid48 (src)

, - Android port of x48, the awesome HP48GX/SX emulator

Powerful math engine and math scripting language, that combines the simplicity of standard calculators with the flexibility of scripting

Windows Calculator

Simple yet powerful calculator that ships with Windows

Advanced scientific calculator with lots of features

in-line calculator (AutoHotkey Calculator)

Interface-less calculator for Windows that lets you do basic math without having to leave the line you're typing on

Opportunity to use old Windows 7/8 calculator in Windows 10

Professional calculator with unique features

Beautiful calculator with great features, including unit & time zone conversion

Smart notepad with a built-in calculator

Powerful, extensible calculator for the Mac

Galculator

GTK 2 / GTK 3 based scientific calculator

KCalc

Calculator which offers many more mathematical functions than meet the eye on a first glance

x48

Emulate the HP48GX/SX, one of the best engineering calculators ever

Extendable calculator for the 21st Century

Simple Electron Calculator

Basic, cross-platform calculator made with Electron

elcalc

Calculator with simple & beautiful interface

Material Design Calculator

Cross-platform material design calculator

High-precision scientific calculator featuring a fast, keyboard-driven user interface

Cross-platform, Material Design calculator with all the features you would expect from a modern calculator

mdlt

Command-line utility for quick math

calc

Simple, fast and intuitive command-line calculator written in Go

Very simple calculator written in J#. Made as program for J# newcomers to extend and learn from

Cross-platform scientific calculator including unit/currency converters

Computational knowledge engine

Online calculator, that provides basic and advanced mathematical functions useful for school or college

Open-Source, web calculator with beautiful Google Material Design interface

Calculator with user-friendly, unique notepad interface

Huge collection of various calculators

Open-Source command-line style arbitrary precision calculator with mathematical, scientific, programming functions and more

Online set of tools related to math, including a set of calculators, exams and more

Free online math tools for graphing, geometry, 3D, and more. Includes interactive graphical calculator

The place to share tips, tricks, and games regarding graphing or high powered calculators

Great place to ask questions about math

Question & Answer site for professional mathematicians

Really easy tutorial for beginners

How to create a basic calculator in C++ using switch...case

Create a simple calculator with Python