Guide
What size rug for a king bed
Updated September 8, 2026
A standard king bed is 76 inches wide and 80 inches long. That single measurement decides the answer, because the rug has to clear the bed on both sides and at the foot by enough that you step onto wool instead of onto the floor.
The rule this store uses is 18 to 24 inches of rug past the bed on three sides. Eighteen inches is roughly the width of one step out of bed. Below that, the rug reads as a mat that the bed happens to sit on.
The arithmetic, size by size
A king is 76 inches across, so the rug needs 76 inches plus twice the clearance you want.
| Rug | Width in inches | Left over, each side | Verdict |
|---|---|---|---|
| 8 x 10 | 96 | 10 in | Too narrow to surround the bed |
| 9 x 12 | 108 | 16 in | The common choice, just under the rule |
| 10 x 14 | 120 | 22 in | Full clearance on both sides |
A 10 x 14 is the size that satisfies the rule outright. It leaves 22 inches of floor each side of a king, inside the 18 to 24 inch band, and its 168 inch length carries well past the foot of an 80 inch bed.
A 9 x 12 is the size most people buy, and it lands at 16 inches. Two inches under. In a room that cannot take a 10 x 14 it still works, and the shortfall is small enough that it reads as intentional rather than tight.
Shop 10 x 14 rugs · Shop 9 x 12 rugs
Every size, answered
The questions people actually type, each one just arithmetic against a 76 inch bed.
| Rug | Each side of a king | Verdict |
|---|---|---|
| 5 x 7 | narrower than the bed | Too small. Use it beside the bed, not under it |
| 6 x 9 | narrower than the bed | Too small to surround. Two thirds placement only |
| 8 x 10 | 10 in | Too narrow to surround. Good in the two thirds placement |
| 9 x 12 | 16 in | Two inches under the rule. The common choice |
| 10 x 13 | 22 in | Full clearance, and shorter than a 10 x 14 if the room is tight |
| 10 x 14 | 22 in | Full clearance on both sides and the most room at the foot |
Is an 8 x 10 too small for a king? To surround it, yes. Ten inches each side is not a step, it is a ledge. Pushed down under the lower two thirds of the bed it works well, and it is the size to buy if the room cannot take a 9 x 12.
Is a 9 x 12 big enough for a king? Yes, with two inches to spare against the rule rather than in hand. It is the size most king bedrooms end up with and it does not read as tight.
What about a 10 x 12? It would give the full 22 inches each side, and we do not carry that size. A 10 x 13 is the nearest thing we stock and gives the same clearance with a foot more length.
The three placements, in short
Which one you use is decided by the room, not the bed.
- Full surround. The rug runs under the whole bed and out past it on three sides, nightstands included. A 10 x 14, or a 9 x 12 in a slightly smaller room.
- Lower two thirds. The rug starts below the nightstands and extends past the foot. Feet land on rug, nightstands sit on bare floor, and the room reads larger. This is what makes an 8 x 10 work under a king.
- Runners down the sides. One each side, covering only the floor you stand on.
The bedroom placement guide works all three through with the room widths each one needs.
What the room has to be
Add about 18 inches of bare floor around the rug itself so the rug does not run under the baseboards.
- A 10 x 14 wants a bedroom of roughly 13 by 17 feet.
- A 9 x 12 wants roughly 12 by 15 feet.
Measure the room before the bed. A 10 x 14 in a 12 by 13 foot bedroom will touch two walls, and at that point the rug is doing the job of carpet.
The 8 x 10, placed differently
An 8 x 10 leaves 10 inches each side of a king, which is not enough to surround it. It has a second placement that works well and costs less floor.
Slide the rug down so it sits under the lower two thirds of the bed. It starts below the nightstands, runs under the mattress from about knee height, and extends past the foot. You get rug where your feet land, the nightstands sit on bare floor, and the room reads larger because the floor is visible at the head of the bed.
This is the placement to use in a bedroom under 12 feet wide, and it is why the 8 x 10 is the deepest size in this catalog.
Two runners instead
A pair of runners, one down each side of the bed, covers the floor you actually stand on and leaves the rest of the room open. It suits a bedroom where a large rug would crowd the doorway, and it costs less than a 10 x 14.
Use 2 x 6 or larger, set 4 to 6 inches out from the bed frame so the runner is not half hidden under it.
Cal king, and why the answer does not change
A California king is 72 inches wide and 84 inches long. It is four inches narrower than a standard king and four inches longer, so a 9 x 12 gains two inches of clearance each side and reaches 18 inches, and a 10 x 14 gains the same.
The extra four inches of length matters at the foot, not at the sides. Both sizes still clear it.
The short answer
10 x 14 if the room takes it, 9 x 12 if it does not, 8 x 10 pushed down under the lower two thirds of the bed if the room is small.