What the Room Layout Planner actually calculates
The planner subtracts the group dimension plus twice the chosen clearance from each room dimension. Both remaining values must be nonnegative to pass. It tests an axis-aligned bounding rectangle, not individual furniture positions, rotation options, door swings, radiators, or access through the room.
The calculation path
Furniture width plus clearances is compared with the room dimensions to report fit and spare space.
Inputs that can change the answer
- Room length: Enter room length in m.
- Room width: Enter room width in m.
- Furniture group length: Enter furniture group length in m.
- Furniture group width: Enter furniture group width in m.
- Desired clearance: Enter desired clearance in m.
Checks that stay outside the formula
Measure door swings and radiator projections before accepting a layout.
A practical order for entering the data
- Measure the usable rectangular room length and width.
- Enter the outer length and width of the whole furniture group, including intended internal gaps.
- Set the clearance required on every side and inspect both remaining-dimension results.
Project walkthrough: Measure a room before buying furniture or finishes
Project walkthrough: Furniture fit: dimensions, clearances, and delivery checks
Project walkthrough: Size a dining table with chair and circulation clearance
Engine check using the prefilled sample
Worked example: room length = 5 m, room width = 4 m, furniture group length = 3.2 m, furniture group width = 2.4 m and desired clearance = 0.75 m. Replace the sample dimensions with measurements from the room; split irregular areas into simpler sections where needed.
Results for these inputs
- Length remaining
- 0.30 m
- Width remaining
- 0.10 m
- Fit assessment
- Fits with the requested clearance
Verify doors, drawers, and circulation on a scaled plan.