Moment of Inertia Calculator helps you easily find shapes of which you want to find the mass moment of inertia. The app has two functions: "Equations" and "Calculate". The "Equations" function gives you the equations for the different mass moments of inertia, the centroid, the different radii of gyration, the centroid position, the volume, and the surface area of the desired shape. The "Calculate" function allows you to input the mass and dimensions of your specific shape and will calculate all of the terms given in the "Equations" function.