|Component of Microsoft Windows|
|Introduced in||Windows 1.0|
|Last included in|
Calculator is an application for mathematical operations that is included with Windows 1.0 and up. In Windows 3.0, the program was completely re-written, adding a Scientific mode allowing for more complex operations such as sin or log. In Windows 8.1, a Metro-based version was introduced. The UWP version of Calculator was made open-source in 2019 and its source code was made available on GitHub.