# Calculator
The Windows Calculator app is a modern Windows app written in C++ that ships pre-installed with Windows.
The app provides standard, scientific, and programmer calculator functionality, as well as a set of converters between various units of measurement and currencies.

Calculator ships regularly with new features and bug fixes. You can get the latest version of Calculator in the [Microsoft Store](https://www.microsoft.com/store/apps/9WZDNCRFHVN5).

[![Build Status](https://dev.azure.com/ms/calculator/_apis/build/status/Calculator-CI?branchName=master)](https://dev.azure.com/ms/calculator/_build/latest?definitionId=57&branchName=master)

  ![Calculator Screenshot](docs/Images/CalculatorScreenshot.png)

## Features
- 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 order of operations.
- Programmer Calculator functionality which offers common mathematical operations for developers including conversion between common bases.
- Date Calculation functionality which offers the difference between two dates, as well as the ability to add/subtract years, months and/or days to/from a given input date.
- Calculation history and memory capabilities.
- Conversion between many units of measurement.
- Currency conversion based on data retrieved from [Bing](https://www.bing.com).
- [Infinite precision](https://en.wikipedia.org/wiki/Arbitrary-precision_arithmetic) for basic
  arithmetic operations (addition, subtraction, multiplication, division) so that calculations
  never lose precision.

## Getting started
Prerequisites:
- Your computer must be running Windows 10, version 1803 or newer.
- Install the latest version of [Visual Studio](https://developer.microsoft.com/en-us/windows/downloads) (the free community edition is sufficient).
  - Install the "Universal Windows Platform Development" workload.
  - Install the optional "C++ Universal Windows Platform tools" component.
  - Install the latest Windows 10 SDK.

  ![Visual Studio Installation Screenshot](docs/Images/VSInstallationScreenshot.png)
- Install the [XAML Styler](https://marketplace.visualstudio.com/items?itemName=TeamXavalon.XAMLStyler) Visual Studio extension.

- Get the code:
    ```
    git clone https://github.com/Microsoft/calculator.git
    ```

- Open [src\Calculator.sln](/src/Calculator.sln) in Visual Studio to build and run the Calculator app.
- For a general description of the Calculator project architecture see [ApplicationArchitecture.md](docs/ApplicationArchitecture.md).

## Contributing
Want to contribute? The team encourages community feedback and contributions. Please follow our [contributing guidelines](CONTRIBUTING.md).

If Calculator is not working properly, please file a report in the [Feedback Hub](https://insider.windows.com/en-us/fb/?contextid=130).
We also welcome [issues submitted on GitHub](https://github.com/Microsoft/calculator/issues).

## Roadmap
For information regarding Windows Calculator plans and release schedule, please see the [Windows Calculator Roadmap](docs/Roadmap.md).

## Data / Telemetry
This project collects usage data and sends it to Microsoft to help improve our products and services.
Read our [privacy statement](https://go.microsoft.com/fwlink/?LinkId=521839) to learn more.
Telemetry is disabled in development builds by default, and can be enabled with the `SEND_TELEMETRY`
build flag.

## Reporting Security Issues
Security issues and bugs should be reported privately, via email, to the
Microsoft Security Response Center (MSRC) at <[secure@microsoft.com](mailto:secure@microsoft.com)>.
You should receive a response within 24 hours. If for some reason you do not, please follow up via
email to ensure we received your original message. Further information, including the
[MSRC PGP](https://technet.microsoft.com/en-us/security/dn606155) key, can be found in the
[Security TechCenter](https://technet.microsoft.com/en-us/security/default).

## License
Copyright (c) Microsoft Corporation. All rights reserved.

Licensed under the [MIT License](./LICENSE).