How Many Square Feet Is a 18×11 Room?
Direct Answer:
198 square feet
18.39 m² · 22.00 sq yd
A room that measures 18 feet by 11 feet has a floor area of 198 square feet. A roomy bedroom that fits a king bed with extras, or a snug living room with a small sectional and TV.
Room at a Glance
Diagonal: 21.1 ft · Perimeter: 58 ft
What 198 Square Feet Looks Like: Large Bedroom or Small Living Room
At this size, you can comfortably fit a king bed with full nightstands and a dresser, plus a reading area with a chair and floor lamp. Alternatively, this works well as a small living room: a 3-seat sofa, a chair or loveseat across, a coffee table, and a media console. Many homes use these rooms as combined primary bedrooms with sitting areas in newer floor plans.
Typical uses for 198 sq ft:
Furniture That Fits a 18×11 Room
For a primary bedroom: king bed (76 × 80 in) on the longest wall, matching tall nightstands, dresser opposite the bed, plus a 30-inch reading chair and small ottoman in one corner. For a living room: 84-inch sofa on one wall, two chairs across, 40 × 24 coffee table, 60-inch media console.
Recommended Bed
King (76 × 80 in) with full primary suite furniture.
Walking Space Rule
For a primary suite, leave 36 inches on each side of the bed. For a living room, plan a 30-inch clear path between sofa and coffee table.
2026 Flooring Cost for a 18×11 Room
Material-only cost ranges based on retail pricing, with 10% waste added on top of the 198 sq ft floor area.
| Material | Sq Ft to Order | Material Cost Range |
|---|---|---|
| Luxury Vinyl Plank (LVP) | 218 sq ft | $436–$1526 |
| Ceramic Tile | 218 sq ft | $218–$1744 |
| Solid Hardwood | 218 sq ft | $872–$2616 |
Paint Needed for a 18×11 Room
Wall area = perimeter × ceiling height, minus 21 sq ft for one door and 30 sq ft for two windows.
| Ceiling Height | Net Wall Area | Gallons (2 Coats) |
|---|---|---|
| 8 ft (standard) | 413 sq ft | 3 gallons |
| 9 ft (modern) | 471 sq ft | 3 gallons |
Calculate a Different Room Size
Not a 18×11 room? Use the calculator below to find the area of any size.
Related Room Sizes
Frequently Asked Questions
Continue Estimating Your Project
Now that you know your 18×11 room is 198 sq ft, plan the materials.
Sources
The figures on this page are based on data from these authoritative industry sources.
- National Association of Home Builders (NAHB) — US home building industry data, including average new-home square footage.
- ANSI Z765 Standard — American National Standard for measuring single-family residential square footage.
- National Wood Flooring Association (NWFA) — Installation guidelines and waste recommendations for wood flooring.
- Sherwin-Williams Technical Data — Paint coverage rates per gallon from the manufacturer’s product data sheets.