How to Measure Rooms and Make Floor Plans With AI Apps

Room-scanning apps can combine camera images, motion tracking, and sometimes LiDAR or other depth data to estimate a room’s geometry. Apple’s RoomPlan, for example, uses the camera and LiDAR Scanner on supported iPhone and iPad devices to create a 3D floor plan with dimensions and recognized objects. Android ARCore’s Depth API is not supported on every device; Google explains that depth estimates are most accurate at roughly half a meter to five meters and improve as the user moves the phone. These are platform capabilities, not a guarantee that every consumer measurement app is accurate. Glass, mirrors, clutter, moving people, low light, and an incomplete scan can affect estimates; motion-based depth can also struggle on featureless surfaces, while supported dedicated depth sensors may help. Start by confirming the app and device support the feature you intend to use. Scan slowly, capture corners and doorways, and check the floor-plan preview for missing or merged walls. Measure key dimensions a second time with a tape or laser tool, especially before buying flooring, ordering furniture, cutting materials, or agreeing to a lease dimension. Check whether the app reports inside or outside dimensions and how it handles trim, openings, and built-ins. A room scan is useful for planning and visualization, but it is not a survey, inspection, or construction drawing. Avoid uploading scans that reveal private rooms or valuables without reviewing data settings. Use the app as a measurement draft, then verify critical numbers directly.