9x11 in square feet, square yards and square meters
A small bedroom, a nursery or a study is about this size. The area is length times width: 9 × 11 = 99 sq ft. Measure to the walls at the longest point, and add closets and alcoves you will floor.
| Unit | This room |
|---|---|
| Square feet | 99 sq ft |
| Square yards | 11.00 sq yd |
| Square meters | 9.20 sq m |
| Perimeter (around the walls) | 40 ft |
| Acres | 0.00227 acres |
What to buy for 99 sq ft
| Material | Amount |
|---|---|
| Flooring (10% waste, 20 sq ft boxes) | 109 sq ft, 6 boxes |
| Carpet off a 12 ft roll (before trimming) | 12.0 sq yd, one piece |
| 12 × 12 in tiles (10% waste) | 109 tiles |
| Baseboard (full perimeter, before doorways) | 40 ft |
Flooring with different waste allowances
Straight layouts need about 5 to 7%, diagonal layouts 10%, and herringbone or patterns 15%.
| Waste | Flooring to buy | Boxes of 20 sq ft |
|---|---|---|
| 5% waste | 104 sq ft | 6 |
| 10% waste | 109 sq ft | 6 |
| 15% waste | 114 sq ft | 6 |
Use the square footage calculator for L-shaped rooms, circles and triangles, the carpet calculator for the roll layout with trimming, or the flooring calculator for a full flooring estimate.
99 square feet: one short of a hundred
Nine by eleven multiplies out to 99 sq ft, a single square foot less than a 10 × 10. Because both sides are whole numbers of feet and one of them is a whole number of yards, the floor is also exactly 11 square yards before any extra is added. It is 40 ft around the walls and 14.2 ft from corner to corner. A 6 × 9 ft rug leaves 1.5 ft of floor along the long sides and 1.0 ft at each end.
If a listing or a form asks whether the room reaches 100 sq ft, this one does not, so measure your own walls to the inch before you rely on the nominal size. To finish it you would buy 109 sq ft of plank (6 boxes of 20 sq ft), 12.0 sq yd of carpet cut from a 12 ft roll with no seam, or 109 tiles of 12 in. The walls come to 269 sq ft after a door and two windows, and two coats take 1.54 gallons.
Want to change anything else? The calculator above is the full Square Footage Calculator: edit any number and the results update instantly.
Frequently asked questions
How many square feet is a 9x11 room?
99 square feet (9 ft × 11 ft). That is 11.00 square yards or 9.20 square meters.
How many square feet of flooring do I need for a 9x11 room?
The floor is 99 sq ft, so buy about 109 sq ft with 10% for cuts and waste. That is 6 boxes at 20 sq ft a box.
How much carpet is a 9x11 room?
11.00 square yards of floor. Carpet comes off a 12 ft wide roll, so you buy whole strips: here one 12 ft wide piece 9 ft long, which is 108 sq ft (12.0 sq yd) of carpet for a 99 sq ft floor, plus a few inches a strip for trimming.
Related sizes and guides
Estimates only. Results assume standard materials and simple shapes. Supplier products vary, and the final call on quantity, structure and safety is yours. Check your local code and your supplier's guidance before ordering.