Traditionally, planar density calculations have been performed on an individual basis and manually . With the availability of consistent representation of arbitrary crystals in the form of crystallographic information files (CIFs) , extensive databases that contain collections of CIFs such as Materials Project or Open Quantum Materials Database , and advanced 3D computational geometry libraries in software such as Mathematica , MATLAB (MATLAB, 2021), and Python , automated computation of planar densities of arbitrary crystals for arbitrary lattice planes is possible. Indeed, in this work, we present such a workflow using Mathematica's excellent built-in computational geometry functions in conjunction with MaXrd which facilitates both importing CIF files and dealing with crystal symmetry domain knowledge. This package is implemented on the full collection of Materials Project compounds as obtained via the Materials API . This represents the largest collection of planar densities to our knowledge with lattice planes up to a min and max Miller index of -3 and 3, respectively.