Decorating & interiors
Will It Fit? Furniture Checker
It is a solved geometry problem: a rigid box passes an opening straight, at a tilt, or not at all - and the tilt condition has an exact formula.
Calculator
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How it works
The item travels on its longest dimension, so its cross-section is the two smallest. The tool first tests a straight pass, then the exact tilted rotated-rectangle condition - the same maths in the RoomPlot app.
Frequently asked questions
How do movers get sofas through small doors?
Tilting: rotating the cross-section through the diagonal of the opening. Removable feet, cushions and doors off the hinges buy the last few centimetres.
What size is a standard doorway?
UK internal doors are commonly 762 mm (30") wide with ~1980 mm clear height; US interiors are often 30-32". Measure the actual clear opening - frames steal width.