Add up what needs to fit inside, then get a suggested floor area and a sensible width and depth to aim for. Useful before you ask anyone for a quote.
What goes inside
Each item below has a typical footprint in m² (editable). Set how many of each you need.
Circulation space
Furniture footprints do not include the space to move around them. A 35% allowance is a comfortable default for a room you use daily.
How this works and what to assume
The planner adds the footprint of each item, then adds your circulation percentage on top for walking room. The suggested width and depth pick a near-square layout that meets the area, rounded up to the nearest 0.1 m. Many garden room ranges step in 0.5 m or 1 m increments, so round up to the next size a supplier offers.
The default footprints are typical sizes: a desk and chair needs roughly 1.5 m² once you allow for the chair pulled out, a two-seat sofa around 2 m², a single bed about 2 m². Adjust any value to match your own furniture.
This is a planning guide for floor area only. It does not account for door swings, window positions, head height or how a specific layout fits together. Sketch your real furniture on the footprint before you commit.