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.

Features

  • Standard arithmetic mode (add, subtract, multiply, divide, etc.)
  • Scientific mode (trigonometry, exponentials, order-of-operations)
  • Programmer mode (base conversion, bitwise operations)
  • Date calculation (difference between dates, adding/subtracting date intervals)
  • Unit and currency conversion (multiple measurement units, live currency rates)
  • Calculation history, memory slots / recall capabilities

Project Samples

Project Activity

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Categories

Calculators

License

MIT License

Follow Windows Calculator

Windows Calculator Web Site

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Additional Project Details

Operating Systems

Windows

Programming Language

C#, C++

Related Categories

C# Calculators, C++ Calculators

Registered

2025-09-24