Cómo funciona esta calculadora
Purchase area = (room area x waste factor) + (stairs x carpet per stair). Roll length = round up[(purchase area / roll width), nearest 0.1 m].
Ejemplo resuelto
A 4 m x 3 m room with 10% waste needs 13.2 m2. From a 4 m wide roll, order 3.3 m of roll length.
Suposiciones a comprobar
- The room is treated as a single rectangle; seams, pattern matching, and closets are not modeled - add waste or measure separately for irregular rooms.
- The roll-width figure assumes the full roll width is usable; border trimming reduces usable width slightly.
- The stair allowance is a general average; winders, half-landings, and wide stairs need more.