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What Size Rug for a Sectional? Size and Placement That Work

An L-shaped couch needs more rug than a straight sofa. Here is how to size it and where it goes.

Cream L-shaped sectional with the front legs of both runs resting on a large flat-woven rug, oak floor showing at the walls

A sectional changes the rug math. A straight sofa needs the rug to reach one set of front legs. An L-shaped couch needs it to reach two, running at right angles, and that takes more rug than most people expect.

Here's how to size it without guessing.

Why sectionals make rugs look small

An L-shaped couch fills a corner and reaches out into the room along two sides. If the rug only reaches the short side, the long side sits on bare floor, and the couch looks like it's sliding off the rug.

The rule is the same as for any living room: every seat has its front legs on the rug. With a sectional, that means both runs of the L.

Close-up of the corner of a cream sectional where both runs meet, their front legs on a flat-woven rug
Both runs of the L sit on the rug, front legs on.

Start from the room, not the couch

  1. Measure the room, wall to wall.
  2. Take 2 to 3 feet off each measurement, so 12 to 18 inches of floor shows at every wall.
  3. Round down to the nearest standard size.
  4. Check both runs of the L. Lay painter's tape on the floor in the rug's outline. If the front legs on both sides land inside the tape, the size works.

If the tape shows one side of the couch landing on bare floor, go up a size, as long as you still keep 12 inches of floor at the walls.

Where the rug goes

  • Slide it under the front legs along both sides of the L, so the corner seat sits on the rug.
  • Center it on the seating group, not on the room. The coffee table should sit roughly in the middle of the rug.
  • Leave the back legs on the floor. Front legs on, back legs off is the easiest look to get right.
Painter's tape marking a rug outline on an oak floor in front of a sectional
Tape the outline first. It costs nothing and saves a return.

Sectional with a chaise

A chaise end is still a seat. Its front legs go on the rug like the others. If the chaise is long, the rug often needs to run longer on that side, so measure from the chaise's front legs, not just the back cushions.

Can you use a round rug with a sectional?

Sometimes. A round rug works when the sectional is compact and the coffee table is round, so the shapes echo each other. It works less well with a big L-shaped couch, because a round rug can't reach the front legs of both long runs without swallowing the room.

If you love a round rug, try it with tape first, the same way.

A compact sectional with a round rug and a round oak coffee table
A round rug suits a compact sectional and a round table.

Add the chair and the coffee table

If there's an armchair across from the sectional, its front legs go on the rug too. The coffee table sits 14 to 18 inches from the couch: close enough to reach a mug, far enough to walk past.

Armchair facing a sectional across a large rug, oak coffee table in between
Everyone who sits in the group touches the rug.

Mistakes to skip

  • A rug that reaches one side of the L only. It makes the couch look like it's sliding off.
  • Centering the rug on the room when the seating is in a corner. Center it on the group.
  • A rug tucked fully under a huge sectional. You lose most of it under the cushions, and you pay for rug nobody sees.

FAQ

Should a rug go all the way under a sectional? It can, if the room is big enough to keep 12 to 18 inches of floor at the walls. Front legs on is usually the better look and easier to fit.

What about an L-shaped couch in a small living room? Use the same formula from your room size. In a small room the rug may only reach the front legs, and that's all it needs to do.

Does the rug go under the ottoman? Yes. An ottoman is part of the seating group, so it sits fully on the rug.

Your room, drawn to scale

Right-Size Room, No. 03 in the Decorwick Measured Home Series, has the full Rug Finder in US and UK sizes and 40 layouts drawn to scale, including living rooms built around big seating, with the rug already placed. See Right-Size Room

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