The most common mistake in a room is a rug that is too small.
A rug is a ground plane. It decides where a room begins and ends, which furniture belongs to which conversation, and how large the space reads. Get the size wrong and nothing else about the piece can rescue it — the drawing, the wool, the age of the design all stop mattering the moment the rug is floating in the middle of the floor with everything standing off it.
What follows is how the sizes actually work, room by room, with the pieces Loomish holds in each band. The measurements are standards of the trade, not preferences.
Front legs of the sofa and both chairs on the rug; the table entirely on. Bare floor held at the perimeter.
The living room
The front legs of every seat should stand on the rug. All of them, or none of them — never some.
This is the rule that decides whether a room reads as composed or as furniture that happens to share a floor. A rug large enough to catch the front legs of the sofa and both chairs pulls the seating into one object. A rug too small to reach them leaves each piece stranded, and the room reads as larger and emptier than it is.
All legs on is the more generous version and needs a genuinely large rug — usually 9 by 12 and above. Front legs on is the standard, and it is what most rooms are sized for. What does not work is the middle case: some furniture on, some off, which reads as an accident.
Leave 12 to 18 inches of bare floor between the edge of the rug and the wall. That margin is what makes the rug look chosen rather than fitted.
Large, on the floor now
Agra
Agra
Bokhara Tekke
Bokhara Tekke
Chairs pulled out and still fully on the rug. Twenty-four to thirty inches clear on every side of the table.
Under a dining table
The rug must extend 24 to 30 inches past every edge of the table, so a chair stays on it when pulled out.
The dining room is the one place where the measurement is not aesthetic. A chair that catches its back legs on the edge of a rug every time someone stands up will annoy for years and wear the binding through. Twenty-four inches is the minimum; thirty is comfortable.
Measure the table, add 48 to 60 inches to both the length and the width, and that is the rug. A six-seat table of about 3 by 6 feet therefore wants something close to 8 by 10.
A dense hand-knotted pile is the right construction here for the same reason it is right in a hallway: chairs move across it daily, and a low, tight pile takes that far better than a thick or shaggy one.
Large, on the floor now
Rug beginning below the nightstands, extending past the foot. Wool on three sides of the bed.
The bedroom
Start the rug below the nightstands and run it past the foot of the bed, so bare feet land on wool on three sides.
The purpose here is different from the living room. Nobody looks at a bedroom rug from across the space; they step onto it. So the measurement is taken from the body, not the composition: the rug should reach at least 18 to 24 inches beyond the bed on both sides and at the foot.
Beginning the rug about a third of the way down the bed, below the nightstands, is the usual solution. It gives the same warmth underfoot at a fraction of the size, and it lets the nightstands sit flat on the floor rather than rocking on an edge.
The other approach costs nothing and works well: a runner down each side of the bed. Two narrow pieces do the whole job for less than one large one, and in a room with a beautiful floor they leave most of it visible.
Medium, on the floor now
Agra
Agra
Agra
Agra
About a foot of floor held at each end, four to six inches at the sides.
Halls and long rooms
Leave about a foot of floor at each end and four to six inches at each side. A runner that touches all four edges turns a hall into a corridor.
A long narrow space is the hardest floor in a house and the easiest to get wrong. Filling it end to end makes the hall read as a passage to be got through. Leaving floor visible at both ends makes the same hall read as a room with a path across it.
The width matters as much. Four to six inches of floor on either side keeps the runner reading as an object placed there; a runner wall-to-wall reads as carpet that was cut badly.
For a space longer than any single runner, two pieces in sequence with a gap between them works better than one that has been forced. The interval is a decision, and it reads as one.
Runners, on the floor now
Bokhara Tekke
Bokhara Tekke
Bokhara Tekke
Bokhara Filpa
What each size actually solves
The bands below are the ones Loomish sorts by, and the counts are what is on the floor as this page is read.
The questions that decide it
Should furniture sit on or off the rug?
On, at least at the front. The standard is that the front legs of every seat stand on the rug, which pulls the seating into a single group. All legs on is more generous and needs a much larger piece. The one arrangement to avoid is some furniture on and some off, which reads as an accident rather than a decision.
What size rug do I need for a living room?
Large enough that the front legs of the sofa and both chairs land on it — in most rooms that means 8 by 10 or larger, and 9 by 12 if you want every leg on. Leave 12 to 18 inches of bare floor between the rug and the wall.
What size rug goes under a dining table?
Add 48 to 60 inches to both the length and the width of the table. That gives 24 to 30 inches of rug beyond every edge, which is what a chair needs to stay on the rug when it is pulled out. A 3 by 6 foot table therefore wants roughly 8 by 10.
How big should a bedroom rug be?
It should extend 18 to 24 inches beyond the bed on both sides and at the foot. Starting it below the nightstands, about a third of the way down the bed, achieves that with a much smaller piece and keeps the nightstands flat on the floor.
What does a 5 by 7 rug actually cover?
One object, not a group. It will sit under a coffee table, anchor a reading chair, or run beside a bed. It is not large enough to catch the front legs of a sofa and two chairs, which is the most common way a 5 by 7 disappoints.
What does an 8 by 10 solve?
It is the first size that holds a whole room. An 8 by 10 will take the front legs of a full seating group, or sit under a six-seat dining table with the chairs clear. Below it you are furnishing an object; at it you are furnishing a room.
How does room scale change the right size?
The rug should be sized to the furniture group, not the room, and then checked against the room. The margin of bare floor at the perimeter is what tells the eye the room is larger than the rug — lose that margin and the space reads smaller, not bigger.
Can two rugs be used in one long room?
Yes, and in a long room it is usually better than one forced piece. Two runners in sequence with a deliberate gap, or one rug per furniture group in an open plan, reads as two decisions rather than one compromise.