Enter the room size and RoomFitter picks the largest standard rug that keeps that border on every side, then adds it to the floor plan so you can see how the furniture sits on it.
How the checks work
Every piece is a rectangle measured in real units. RoomFitter reports three kinds of problem. A piece that crosses a wall is flagged as sticking out of the room. Two solid pieces that share any floor space overlap. And two pieces that are close but not touching are checked against the walkway width you choose: 24, 30 or 36 inches (61, 76 or 91 cm). The gap is measured edge to edge, or corner to corner for pieces that sit diagonally from each other. Rugs are drawn dashed and ignored by these checks, because furniture is meant to stand on them.
The room’s floor area and the share covered by furniture appear above the plan. Most comfortable rooms have between a third and a half of the floor covered; above about 60% a room starts to feel crowded.
The door and hallway test
A sofa goes through a doorway lengthwise, so what matters is its cross-section: depth and height. If the smaller of the two is narrower than the door opening and the other is shorter than the door height, it fits on its back or side. If not, tilting it back can work when the diagonal depth is narrower than the door. For a hallway turn, RoomFitter uses the classic moving-sofa geometry: it finds the longest object of the sofa’s thickness that can swing round a right angle from the hallway width into the door width. A small safety margin is subtracted from the door size because hands, blankets and door stops take space.
Private by design
RoomFitter has no accounts and no server-side storage. Your room size, furniture and door measurements are saved in local storage on this device only.
Frequently asked questions
What size rug for a 12 × 15 room?
With an 18 inch border, a 9 × 12 foot rug.
What size rug for a 10 × 12 room?
With an 18 inch border, a 6 × 9 foot rug. With a 12 inch border you could go up to 8 × 10.
Should the rug go under the bed?
In a bedroom the rug usually extends 18–24 inches beyond the sides and foot of the bed, so it is under the lower two thirds of the bed.
Is RoomFitter free?
Yes. The room planner, door fit checker and rug calculator are free with no account.
Is my floor plan uploaded?
No. Your room and furniture are saved only in this browser on this device.