What a 2D floorplan shows
A 2D floorplan looks down on the building. It typically shows walls, room boundaries, doors and windows, with labels or dimensions where they are available. Removing perspective makes it easier to follow routes between rooms and compare how the floor area is divided.
When to use 2D
Start in 2D when you are working out room positions, door clearances or the relationship between neighbouring spaces. It is also a helpful format for discussing a layout with someone else because there is a consistent overhead view. Always check the units and stated scale before using a drawing to infer a size.
What a 3D floorplan adds
A 3D floorplan adds the vertical dimension. A cutaway or dollhouse view can make wall heights and the arrangement of rooms easier to picture. Furniture and finishes, when present, provide context, but they can also distract from dimensions that still need checking.
When to use 3D
Use 3D to explore how a layout feels and to explain an idea to someone who finds technical drawings hard to read. Perspective can make distances appear different, so return to measured dimensions before making a fit decision. An attractive render is a visual aid, not proof that a product or layout will fit.
A simple workflow that uses both
Gather measurements, organise the layout in 2D, review it in 3D and return to 2D when you want to revise the structure. FreeFloorplan3D is being developed around free 2D and 3D floorplanning with free image downloads. The editor is coming soon; the concept images on this website are not generated by the software.