10x20 in square feet, square yards and square meters
A one-car parking bay, a storage unit or a long shed is about this size. The area is length times width: 10 × 20 = 200 sq ft. Measure to the walls at the longest point, and add closets and alcoves you will floor.
| Unit | This room |
|---|---|
| Square feet | 200 sq ft |
| Square yards | 22.22 sq yd |
| Square meters | 18.58 sq m |
| Perimeter (around the walls) | 60 ft |
| Acres | 0.00459 acres |
What to buy for 200 sq ft
| Material | Amount |
|---|---|
| Flooring (10% waste, 20 sq ft boxes) | 220 sq ft, 11 boxes |
| Carpet off a 12 ft roll (before trimming) | 26.7 sq yd, one piece |
| 12 × 12 in tiles (10% waste) | 220 tiles |
| Baseboard (full perimeter, before doorways) | 60 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 | 210 sq ft | 11 |
| 10% waste | 220 sq ft | 11 |
| 15% waste | 230 sq ft | 12 |
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.
10 × 20: the single-bay footprint
Two hundred square feet in a 10 × 20 strip is the shape of a one-car parking bay, a large storage unit, a carport pad or a long shed. It is 60 ft around the outside and 22.4 ft on the diagonal. A car fits with room to open one door comfortably, and as storage it holds a lot once shelving goes up the long walls.
If you are pouring it, a 4 in slab with a little extra is about 2.7 cubic yards, an easy ready-mix order. If you are finishing it as living space, the 200 sq ft floor needs 11 boxes of plank, and the walls (480 sq ft at 8 ft, 429 after a door and two windows) take 2.45 gallons for two coats. Carpet for a room this narrow comes off a 12 ft roll in one piece with no seam: about 26.7 sq yd.
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 10x20 room?
200 square feet (10 ft × 20 ft). That is 22.22 square yards or 18.58 square meters.
How many square feet of flooring do I need for a 10x20 room?
The floor is 200 sq ft, so buy about 220 sq ft with 10% for cuts and waste. That is 11 boxes at 20 sq ft a box.
How much carpet is a 10x20 room?
22.22 square yards of floor. Carpet comes off a 12 ft wide roll, so you buy whole strips: here one 12 ft wide piece 20 ft long, which is 240 sq ft (26.7 sq yd) of carpet for a 200 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.