Rug Size Calculator

Enter your room dimensions and get the largest standard rug that fits, leaving a balanced bare-floor border to the walls.

Last updated: August 2026

The right rug leaves roughly 8 to 18 inches of bare floor between its edge and the walls — so a 12 by 15 foot room takes a 9 by 12 rug, and a 10 by 12 room takes an 8 by 10. Aim for a consistent border on all sides and get the rug under at least the front legs of your main furniture. Enter your room size above for the exact pick, then use the chart below.

Rug border border Keep the bare-floor border even on all four sides
A rug should feel like a frame inside the room — centered, with an even border of bare floor to the walls.

Standard Rug Sizes (Quick Chart)

These are the standard US rug sizes and the rooms each one suits. When you are between two sizes, size up — a rug that is slightly too big always looks better than one that is too small.

Rug sizeBest roomPlacement
5 × 8 ftSmall living room, under a queen bed footFront legs / accent
6 × 9 ftApartment living room, dining for 4Front legs on
8 × 10 ftMost living rooms, under a queen bedFront or all legs
9 × 12 ftLarge living room, under a king bedAll legs on
10 × 14 ftGreat room, open planAll legs, wide border

What to Look For When Buying a Rug

Size decided, a few things separate a rug that lasts from one you replace in a year.

  • Material — wool for durability and stain resistance, polypropylene for budget and high-traffic or outdoor spots, cotton for washable smaller rugs.
  • Pile height — low pile under dining tables and rolling chairs; plush pile for bedrooms and low-traffic living rooms.
  • A rug pad — adds cushion, stops slipping, and roughly doubles the life of the rug; buy it about 1 inch smaller than the rug all around.
  • Border you can live with — confirm the size leaves an even bare-floor border and clears your door swing.
Rug sizeTypical US priceBest for
5×8 ft$60–400Accents, small rooms
8×10 ft$150–900Most living rooms
9×12 ft$250–1,500Large rooms, under a king

Prices are typical US ranges and vary by material, weave, and brand — treat them as ballparks, not quotes.

For room-by-room detail, see the full rug size guide, plus specifics for a living room rug, a rug under a bed, and a rug under a dining table.

Frequently Asked Questions

What size rug fits a 12 by 15 living room?

A 9 by 12 foot rug is the ideal fit for a 12 by 15 room, leaving about 18 inches of bare floor on each side. If your seating group is large and you want every leg on the rug, a 10 by 14 also works and looks generous.

How much bare floor should show around a rug?

Aim for 8 to 18 inches of bare floor between the rug and the walls, kept even on all sides. Less than 8 inches makes the rug look like wall-to-wall carpet; much more than 18 makes it look undersized for the room.

Should furniture sit on the rug?

At a minimum, the front legs of your sofa and chairs should sit on the rug to tie the seating group together. In larger rooms, all legs on the rug looks more finished, but it needs a bigger rug and a clear border past the furniture.

Is it better to have a rug too big or too small?

Too big, almost always. A slightly oversized rug still frames the room, while a small rug floats in the middle and makes the whole space feel cheaper. When in doubt between two standard sizes, choose the larger.

Note: Recommendations use standard US rug sizes and typical bare-floor borders. Furniture layout, doorways, and open-plan zones can change what works, so measure your space and account for anything that opens onto the rug.

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