What size rug under a bed?
For a queen bed, a 7 × 10 or 8 × 10 ft rug set crosswise under the lower two-thirds of the bed is the usual pick. A king needs 8 × 10 to 9 × 12, and a twin 6 × 9 to 7 × 10.[1 · Oct 29, 2026]
The rule
The rug should reach 18 to 24 in beyond each side of the bed.[2 · Oct 29, 2026] The Home Depot says at least 24 in, with the rug under the bed's front legs.[3 · Oct 29, 2026] Placing it under the bottom two-thirds of the bed leaves room for nightstands on the bare floor.[1 · Oct 29, 2026]
Rug size by bed size
Our arithmetic uses Sleep Foundation's mattress dimensions.[4 · Oct 29, 2026] Across the bed: mattress width plus 24 in each side. Depth: two-thirds of the mattress length plus 24 in past the foot. Then the smallest standard size that covers both, laid with its long side across the bed, within a 2 in margin.[3 · Oct 29, 2026][1 · Oct 29, 2026][2 · Oct 29, 2026]
| Bed | Mattress | Rug needed (across × depth) | Smallest standard size | Lowe's chart |
|---|---|---|---|---|
| Twin | 38 × 75 in | 7 ft 2 in × 6 ft 2 in | 6 × 9 ft | 6 × 9 to 7 × 10 |
| Twin XL | 38 × 80 in | 7 ft 2 in × 6 ft 5 in | 7 × 10 ft | Not listed |
| Full | 54 × 75 in | 8 ft 6 in × 6 ft 2 in | 6 × 9 ft | 7 × 10 to 8 × 10 |
| Queen | 60 × 80 in | 9 ft × 6 ft 5 in | 7 × 10 ft | 7 × 10 to 8 × 10 |
| King | 76 × 80 in | 10 ft 4 in × 6 ft 5 in | 8 × 11 ft | 8 × 10 to 9 × 12 |
| California king | 72 × 84 in | 10 ft × 6 ft 8 in | 7 × 10 ft | Not listed |
Lowe's lists a twin as 39 × 75 in; Sleep Foundation gives 38 × 75 in. With 18 in instead of 24 in per side, a size smaller often works.
Other bedroom layouts
- Just the bed: a 6 × 9 can sit under the bed alone; an 8 × 10 suits a queen or king with nightstands.[2 · Oct 29, 2026]
- Runners on each side: a 2 × 6 ft runner on each side of the bed.[2 · Oct 29, 2026] Lowe's suggests 3 × 5 or 4 × 6 on each side for any bed size.[1 · Oct 29, 2026]
- Foot of the bed: a 3 × 5 or 4 × 6.[2 · Oct 29, 2026]
- Full bed: Safavieh suggests a 5 × 8 under the lower two-thirds, set crosswise; 8 × 10 or 9 × 12 for a queen or king; and 9 × 12 for two twins side by side.[5 · Oct 29, 2026]
- King: a designer quoted by Homes & Gardens suggests 8 × 11; another says a guest queen can take a 5 × 8 on the lower third.[6 · Oct 29, 2026]
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Sources: 1. Lowe's, Area rug and patio rug sizing guide (PDF, product document). 2. Bed Bath & Beyond, The ultimate area rug size and placement guide. 3. The Home Depot, Selecting proper rug size (PDF). 4. Sleep Foundation, Mattress sizes and dimensions (updated July 2025). 5. Safavieh, Area rug tips. 6. Homes & Gardens, The ultimate rug size guide (Sarah Warwick, June 2024). Checked Oct 29, 2026. Border widths, metric conversions and size picks are our own arithmetic from those rules. Trademarks belong to their owners; figures are restated in our own words and tables, not reproduced.