EngineeringPaper.xyz is a web app for engineering calculations that handles unit conversion/checking automatically and also supports plotting, solving systems of equations, and documenting your calculations (see the official blog for many examples). It’s easy to share your calculations by creating a shareable link that anyone can open and build off of. Additionaly, you can save and open your files locally if you prefer not to save to the cloud. EngineeringPaper.xyz runs on Mac, Windows, Linux, and ChromeOS and works on all of the major browsers. Additionally, EngineeringPaper.xyz is designed to run well on Android and iOS devices. Launch EngineeringPaper.xyz in your browser to try it out.