Guide
How to read a floor plan.
A floor plan is a view from above, cut about one metre above the floor. Thick lines are walls, arcs are door swings, thin lines in a wall are windows, and the numbers are sizes. Here is how to read each part.
Try it freeWalls
Walls are the thick or filled lines. Outer walls are usually thicker than inner walls.
Doors
A door is a gap in the wall with an arc. The arc shows which way it opens and how much floor it needs.
Windows
A window is drawn as thin parallel lines inside the wall.
Dimensions and scale
Dimension lines have a number between two ticks. In metric plans the number is often in millimetres, so 3400 means 3.4 m. A scale of 1:50 means 1 cm on paper is 50 cm in real life.
Furniture and symbols
Furniture is drawn as simple outlines to scale. Electrical plans add symbols for sockets, switches and lights. In Roommie you can hover a symbol to see what it means.
Questions
Which way is north on a floor plan?
Look for a north arrow. If there is none, north is often at the top, but do not rely on it.
What does 1:100 mean?
One unit on the drawing is 100 units in real life. 1 cm on paper is 1 m.
Updated 5 October 2026. Outputs are schematic-design drafts, not construction documents.