How Many Square Feet Is a 8×21 Room?
Direct Answer:
168 square feet
15.61 m² · 18.67 sq yd
A room that measures 8 feet by 21 feet has a floor area of 168 square feet. Enough room for a queen bed with both nightstands, a dresser, and a small desk or chair — the most common adult bedroom size.
Room at a Glance
Diagonal: 22.5 ft · Perimeter: 58 ft
What 168 Square Feet Looks Like: Comfortable Bedroom
This is the sweet spot for a comfortable adult bedroom. A queen bed centers the longest wall, with matching nightstands on either side. There is room across from the bed for a dresser and a TV, plus a small reading chair in the corner. Two people can walk past each other and around the bed without obstruction. Many of these rooms also serve as small dining rooms or modest sitting rooms.
Typical uses for 168 sq ft:
Furniture That Fits a 8×21 Room
A queen bed (60 × 80 in) fits comfortably with 24-inch nightstands on each side and 30 inches of walking space at the foot. There is room for a 60-inch dresser opposite the bed plus a 28-inch chair in a corner. Skip a bench at the foot of the bed unless the room is wider than 12 ft.
Recommended Bed
Queen (60 × 80 in) is the sweet spot — king is possible but limits other furniture.
Walking Space Rule
30 inches at the foot of the bed and 24 inches on each side is the minimum. Anything tighter feels cramped to most people.
2026 Flooring Cost for a 8×21 Room
Material-only cost ranges based on retail pricing, with 10% waste added on top of the 168 sq ft floor area.
| Material | Sq Ft to Order | Material Cost Range |
|---|---|---|
| Luxury Vinyl Plank (LVP) | 185 sq ft | $370–$1295 |
| Ceramic Tile | 185 sq ft | $185–$1480 |
| Solid Hardwood | 185 sq ft | $740–$2220 |
Paint Needed for a 8×21 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 8×21 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 8×21 room is 168 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.