12x13 in square feet, square yards and square meters
A primary bedroom in a smaller house is about this size. The area is length times width: 12 × 13 = 156 sq ft. Measure to the walls at the longest point, and add closets and alcoves you will floor.
| Unit | This room |
|---|---|
| Square feet | 156 sq ft |
| Square yards | 17.33 sq yd |
| Square meters | 14.49 sq m |
| Perimeter (around the walls) | 50 ft |
| Acres | 0.00358 acres |
What to buy for 156 sq ft
| Material | Amount |
|---|---|
| Flooring (10% waste, 20 sq ft boxes) | 172 sq ft, 9 boxes |
| Carpet off a 12 ft roll (before trimming) | 17.3 sq yd, one piece |
| 12 × 12 in tiles (10% waste) | 172 tiles |
| Baseboard (full perimeter, before doorways) | 50 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 | 164 sq ft | 9 |
| 10% waste | 172 sq ft | 9 |
| 15% waste | 179 sq ft | 9 |
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 and flooring for a 12x13 room for a full flooring estimate.
A 12 × 13 room and the 12 foot roll
At 156 sq ft, the 12 ft side of a 12 × 13 room is the one that matters for carpet: broadloom is usually 12 ft wide, so one length of 13 ft covers the whole floor with no seam. That piece is 17.3 sq yd, plus a few inches at each end for trimming. An 8 × 10 ft area rug over a hard floor would show 2.0 ft at the sides and 1.5 ft at the ends.
Hard flooring comes to 172 sq ft with waste, or 9 boxes at 20 sq ft each. The four walls total 400 sq ft at an 8 ft ceiling; knock off a door and two windows and 349 sq ft is left, which two coats cover with 1.99 gallons. That rounds to 2 gallons at the store, and the 156 sq ft ceiling adds 0.89 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 12x13 room?
156 square feet (12 ft × 13 ft). That is 17.33 square yards or 14.49 square meters.
How many square feet of flooring do I need for a 12x13 room?
The floor is 156 sq ft, so buy about 172 sq ft with 10% for cuts and waste. That is 9 boxes at 20 sq ft a box.
How much carpet is a 12x13 room?
17.33 square yards of floor. Carpet comes off a 12 ft wide roll, so you buy whole strips: here one 12 ft wide piece 13 ft long, which is 156 sq ft (17.3 sq yd) of carpet for a 156 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.