A massing diagram is a three-dimensional architectural tool used to conceptualize and analyze the volume and spatial relationships of a building or set of buildings. Focusing on the overall form and scale rather than detailed architectural elements, these diagrams help architects assess how structures will interact with their environment in terms of scale, proportion, and urban integration. They facilitate necessary analyses of factors such as the effects of sunlight and shadows, as well as spatial arrangements within the site context. Massing diagrams are invaluable for quickly iterating design options and presenting clear, understandable project visualizations to clients, stakeholders, and planning authorities.