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Rug size calculator: what size rug do I need?

A rug that is too small is the most common decorating mistake. Pick the room, enter a few measurements and we will recommend the standard rug, round rug or hallway runner that fits, with a to scale plan of how it sits and the border of floor it leaves.

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Large woven rug under a sofa and round coffee table
A standard three seater is about 84 in (213 cm).
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How to find the right rug size

  1. Pick the room. Living room, bedroom, dining room or hallway, since each follows different spacing rules.
  2. Measure the room and furniture. Enter the room or hallway length and width, plus your sofa length, bed size, or table size and shape.
  3. Choose a layout. In a living room, front legs on the rug, all legs on, or a floating rug under the coffee table.
  4. Read the size. See the recommended standard size, the minimum that works, the floor border it leaves and a to scale plan of the rug in your room.

What decides the right rug size

A well sized rug makes a room feel pulled together, while one that is too small looks like a bath mat floating in the middle of the floor. The right size depends on three things: the room, the furniture it needs to anchor, and the border of bare floor you leave around it. The calculator combines all three, recommends a standard size you can actually buy and draws it to scale in your room.

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Living room rug size guide

LayoutHow it looksTypical size
All legs onEvery piece of seating sits fully on the rug9 x 12 ft or larger
Front legs onFront legs of the sofa and chairs rest on the rug8 x 10 ft
FloatingRug sits under the coffee table only5 x 8 or 6 x 9 ft

In most living rooms, the front legs layout is the sweet spot. It connects the sofa and chairs into one conversation area without needing an oversized rug. Whatever you choose, the rug should be at least as long as your sofa, ideally with 6 inches spare at each end.

Bedroom rug size guide

Place the rug crosswise under the bottom two thirds of the bed, starting just in front of the nightstands. You want at least 18 inches of rug on each side of the bed, so the first step in the morning lands on something soft.

BedRecommended rug
Twin5 x 8 ft
Full or double6 x 9 ft
Queen8 x 10 ft
King or California king9 x 12 ft

In a smaller bedroom, two runners work instead of one big rug: one down each side of the bed. A 2.5 x 8 ft runner suits a queen or king, because it runs the full length of the bed (about 80 in) with a little to spare. A 2 x 6 ft runner suits a twin or full.

Dining room rug size guide

Measure your table and add 24 inches on every side. That gives chairs room to slide back without catching on the edge. A 72 by 40 inch table therefore needs a rug of at least 120 by 88 inches, which makes 8 x 10 feet the smallest standard size that works.

Mark it out first. Before you buy, outline the rug size on the floor with painter's tape and live with it for a day. It is the easiest way to see whether it feels right with your furniture.

Round rug sizes for a round dining table

The same 24 inch rule works for a round table: add 24 inches on every side, so the rug diameter is the table diameter plus 48 inches. Pick the round option in the calculator and enter the table diameter.

Round tableUsually seatsMinimum rug diameterStandard round rug
36 in2 to 484 in7 ft round
42 in490 in8 ft round
48 in4 to 696 in8 ft round
60 in6 to 8108 in9 ft round

A square rug works just as well under a round table if you prefer straight lines; use the same size.

Hallway runner and entryway rug sizes

A runner should leave about 4 to 6 inches (10 to 15 cm) of floor on each side and stop at least 6 inches (15 cm) short of each end. Runners come in standard widths of 2, 2.5 and 3 ft (60 to 90 cm) and lengths from 6 to 14 ft, so the width of your hallway decides the width of the runner.

Hallway widthRunner widthFloor each side
36 in (3 ft)2 ft6 in
42 in (3.5 ft)2.5 ft6 in
48 in (4 ft)3 ft6 in
110 cm80 cm15 cm

For a hallway longer than about 18 ft, two runners of the same width with a small gap between them look better than one short runner. At a front door, choose an entryway rug at least as wide as the door opening, so a 3 x 5 ft rug for a single door and a 4 x 6 or 5 x 8 ft rug for double doors, and check that the door clears it when it swings open.

Worked examples: rug sizes for small, average and large rooms

Real results from the calculator for different rooms, in feet and in metric.

RoomFurnitureRecommendedFloor border
Living room, 10 x 10 ft72 in sofa, front legs on5 x 8 ftThe largest standard rug with a 12 in border; a floating rug fits better
Living room, 12 x 10 ft78 in sofa, front legs on6 x 9 ft18 in at the ends, 24 in at the sides
Living room, 16 x 13 ft84 in sofa, front legs on8 x 10 ft36 in at the ends, 30 in at the sides
Living room, 4 x 3 m200 cm sofa, front legs on200 x 290 cm55 cm at the ends, 50 cm at the sides
Bedroom, 4 x 3.5 mQueen bed200 x 290 cm55 cm at the ends, 75 cm at the sides
Bedroom, 13 x 12 ftKing bed8 x 10 ft9 x 12 ft would leave under 12 in of floor, so 8 x 10 ft is the largest that fits
Dining room, 16 x 13 ft72 x 40 in table8 x 10 ftNeeds at least 120 x 88 in, so chairs stay on the rug
Dining room, 13 x 12 ft48 in round table8 ft round24 in at the sides
Hallway, 14 x 3.5 ftNone2.5 x 12 ft runner6 in each side, 12 in at each end
Hallway, 4 x 1.1 mNone80 x 350 cm runner15 cm each side, 25 cm at each end

In a 16 x 13 ft room, a 9 x 12 ft rug also works if you want all the furniture legs on the rug.

How much floor should show around a rug?

Designers usually leave 12 to 18 inches (30 to 45 cm) of bare floor between the rug and the walls. Less than that and the rug looks like wall to wall carpet that didn't quite fit; much more and it looks small. In narrow rooms, keep the border even on both long sides. For more styling ideas, see our guides to living room layouts, dining room decor and bedroom decor, and plan the floor underneath with the flooring calculator.

Frequently asked questions

What size rug for a 12x15 living room?
An 8 x 10 foot rug is usually right, with the front legs of the sofa and chairs on it. It leaves about 2 to 2.5 feet of floor showing around the edges. A 9 x 12 foot rug also fits if you want all the legs on.
What size rug goes under a queen bed?
An 8 x 10 foot rug, placed crosswise under the lower two thirds of the bed, gives you about 18 inches of rug on each side of a queen.
How big should a rug be under a dining table?
Add at least 24 inches on every side of the table. For a table seating six, that usually means an 8 x 10 foot rug.
Is it better for a rug to be too big or too small?
Too big is almost always better, as long as some floor still shows around the edge. A small rug makes furniture look like it is floating and the room look smaller.
Should the sofa sit on the rug?
The most popular layout puts just the front legs of the sofa and chairs on the rug. It links the seating without needing a huge rug. With an 84 in sofa that means a rug at least 6 x 8 ft, and 8 x 10 ft looks more generous.
What size rug do I need for a dining table?
Add 24 in to every side of the table so chairs stay on the rug when pulled out. A 72 x 40 in table needs a rug of at least 120 x 88 in, so 7 x 10 ft at minimum and 8 x 10 ft to be safe.
What size runner do I need for a hallway?
Measure the hallway width and leave about 4 to 6 inches of floor on each side. A 3 ft wide hallway takes a 2 ft runner, a 3.5 ft hallway a 2.5 ft runner and a 4 ft hallway a 3 ft runner. Stop the runner at least 6 inches short of each end, so a 14 ft hallway takes a 12 ft runner.
What size round rug for a dining table for 4?
Most round tables for four are 42 to 48 inches across. Add 24 inches on every side and you need a rug at least 90 to 96 inches across, so an 8 ft round rug.
What size runner rug goes beside a king or queen bed?
A 2.5 x 8 ft runner on each side of the bed runs the full length of a queen or king with a little to spare. For a twin or full, a 2 x 6 ft runner is enough.
What size rug for a 10x10 room?
In a 10 x 10 ft living room, a 5 x 8 ft rug is the largest standard size that still leaves about 12 inches of floor around it. A 6 x 9 ft rug only fits if you accept about 6 inches of floor on two sides.
Is this rug size calculator free?
Yes. It is free, works in feet or meters, draws the rug to scale in your room and needs no sign up.
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