What size rug for a king bed?
Updated November 8, 2026
Under a king bed, a 9x12 rug is the comfortable fit and an 8x10 is the smallest that still works. Laid with its long side across the bed, a 9x12 shows 32 in of rug on each side of a king frame; an 8x10 shows 20 in. A 6x9 shows only 14 in, which reads as too small. Below are both sizes in the same 14x14 room and a calculator for your own room.
King bed rug calculator
Pick your bed and how you want the rug to sit. We draw the bed, two 22" nightstands and each standard rug to scale, and show how much rug you will see.
For a king bed (80" x 88" with the frame), the smallest rug that shows at least 18 in on each side and at the foot here is 8' x 10'.
8' x 10': 20 in shows on each side, 26 in past the foot. The lower 80% of the bed stands on it. Bare floor left: 24 in to each side wall, 54 in past the rug's far edge.
Tap a size to draw it
Rug long side runs across the bed, centered; in the lower placement at least half the bed stands on it. Good = 18–24 in or more of rug past each side and the foot; snug = 12–17 in; too small = under 12 in.
Why a king needs a bigger rug than you might think
A king mattress is 76 in wide, but the bed frame with its headboard is closer to 80 in, and that is what the rug has to frame. We plan with the frame because it is what takes up floor and what your eye compares the rug to. The goal is the usual rug-guide rule of 18 to 24 inches of rug beyond each side and the foot of the bed.
| Bed (frame) | 5' x 8' | 6' x 9' | 8' x 10' | 9' x 12' |
|---|---|---|---|---|
| King 80" | 8" sides, 16" foot too small | 14" sides, 24" foot snug | 20" sides, 26" foot good | 32" sides, 38" foot good |
| California king 76" | 10" sides, 14" foot too small | 16" sides, 24" foot snug | 22" sides, 24" foot good | 34" sides, 34" foot good |
Same 14x14 room, two rugs
Both plans use one room: a king bed centered under the window with a 22 in nightstand on each side. Only the rug changes.
14 x 14 ftKing Bed with a 9x12 Rug in a 14x14 BedroomLeft side 44" · Right side 44" · Foot 80"
14 x 14 ftKing Bed with an 8x10 Rug in a 14x14 BedroomLeft side 44" · Right side 44" · Foot 80"9x12 rug under a king bed
A 9x12 rug turned sideways under a king bed shows 32 in on each side and still leaves about a foot of floor to the walls, the most generous fit for a 14x14 room.
AI-polished images for a more realistic impression, built on an exact 3D model of this layout. Exact sizes are on the floor plan.
| Room | 14 x 14 ft (196 sq ft), 8' ceiling |
|---|---|
| King bed | 80" W x 88" D x 44" H |
| Nightstand | 22" W x 16" D x 24" H |
| Nightstand | 22" W x 16" D x 24" H |
| 9' x 12' rug | 108" W x 144" D |
| Left side of the bed | 44 in | comfortable |
|---|---|---|
| Right side of the bed | 44 in | comfortable |
| Foot of the bed | 80 in | comfortable |
Open this layout in the planner and try your own room size →
A 9x12 is the rug most king beds want. Turned so the 12 ft side runs across the bed, it shows 32 in on each side, so you step onto rug from either side, and in a 14x14 room it still leaves about a foot of bare floor to each side wall. The bed keeps 44 in of walkway on each side and 80 in at the foot, so there is room for a bench or a dresser past the foot too.
8x10 rug under a king bed
An 8x10 rug turned sideways under a king bed shows 20 in on each side: enough to step onto when you get up, the minimum we would pair with a king.
AI-polished images for a more realistic impression, built on an exact 3D model of this layout. Exact sizes are on the floor plan.
| Room | 14 x 14 ft (196 sq ft), 8' ceiling |
|---|---|
| King bed | 80" W x 88" D x 44" H |
| Nightstand | 22" W x 16" D x 24" H |
| Nightstand | 22" W x 16" D x 24" H |
| 8' x 10' rug | 96" W x 120" D |
| Left side of the bed | 44 in | comfortable |
|---|---|---|
| Right side of the bed | 44 in | comfortable |
| Foot of the bed | 80 in | comfortable |
Open this layout in the planner and try your own room size →
An 8x10 under a king is the budget and small-room option. You get 20 in per side: enough to step onto, at the low end of the 18 to 24 inch range. In this 14x14 room it looks a little small next to the big bed; in a 12 ft wide room it is the better choice, because a 9x12 there would run from wall to wall.
California king rug size
A California king is narrower and longer than a king: about 76 in wide and 92 in long with the frame. That gives a little more rug on the sides (22 in with an 8x10, 34 in with a 9x12) but less at the foot, because more of the rug’s depth disappears under the bed. Use the calculator above with “California king” selected to see it drawn.
The whole bed on the rug
To stand the bed and both nightstands on the rug, you need the 9x12 starting at the headboard wall. With two 22 in nightstands, a king takes 124 in of wall, which fits inside the rug’s 144 in, and 32 in of rug shows past each side of the bed.
If you want even more rug, the next common size up is 10x14. It is 14 ft across, so it needs a large primary bedroom; we have not drawn it because it is not in our furniture catalog yet.
Tips for a rug under a king bed
- Long side across the bed, centered on the bed rather than the room.
- Mind the nightstands. Either keep them off the rug (it starts just in front of them) or fully on it. Half on and half off makes them rock.
- Leave bare floor around the rug. A border of about a foot to the walls keeps the rug looking like a rug, not wall-to-wall carpet.
- Too small already? Two runners, one along each side of the bed, cover exactly where your feet land. See how to place a rug under a bed for the layout.
For queen beds, see rug size for a queen bed. For a whole king bedroom with seating, see master bedroom layouts.
Check the rug against your own room, door swing and dresser. Open this plan in the planner and change it to your size.
Questions people ask
Is an 8x10 rug big enough for a king bed?
Just. Across the bed it shows about 20 in on each side of an 80 in king frame, inside the 18 to 24 in range most rug guides suggest but at the low end. It is the right choice when the room is under about 12 ft wide.
What size rug goes under a California king?
The same sizes as a king. A California king frame is a little narrower (about 76 in) and longer, so an 8x10 shows about 22 in per side and a 9x12 about 34 in. Check the foot: the longer bed leaves less rug showing there.
Can I use a 6x9 rug under a king bed?
It will look small. A 6x9 across a king shows only about 14 in on each side. If that is the rug you have, two runners along the sides usually look better.
How big a room do I need for a 9x12 rug under a king?
Laid with the 12 ft side across the bed, the rug needs a wall of at least 12 ft, and about 14 ft to leave a foot of bare floor on each side. In a 12 ft wide room it would run wall to wall.