20 × 24 ft room in other units
A two-car garage or a large workshop is about this size. The area is length times width: 20 × 24 = 480 sq ft. Measure to the walls at the longest point, and add closets and alcoves you will floor.
| Unit | This room |
|---|---|
| Square feet | 480 sq ft |
| Square yards | 53.33 sq yd |
| Square meters | 44.59 sq m |
| Perimeter (around the walls) | 88 ft |
| Acres | 0.01102 acres |
What to buy for 480 sq ft
| Material | Amount |
|---|---|
| Flooring (10% waste, 20 sq ft boxes) | 528 sq ft, 27 boxes |
| Carpet (10% extra) | 58.7 sq yd |
| 12 × 12 in tiles (10% waste) | 528 tiles |
| Baseboard (perimeter, less doorways) | about 88 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 | 504 sq ft | 26 |
| 10% waste | 528 sq ft | 27 |
| 15% waste | 552 sq ft | 28 |
Use the square footage calculator for L-shaped rooms, circles and triangles, or the flooring calculator for a full flooring estimate.
Want to change anything else? The calculator above is the full Square Footage Calculator: edit any number and the results update instantly.
Tools & materials for this project
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Frequently asked questions
How many square feet is a 20x24 room?
480 square feet (20 ft × 24 ft). That is 53.33 square yards or 44.59 square meters.
How many square feet of flooring do I need for a 20x24 room?
The floor is 480 sq ft, so buy about 528 sq ft with 10% for cuts and waste. That is 27 boxes at 20 sq ft a box.
How much carpet is a 20x24 room?
53.33 square yards of floor, so about 58.7 sq yd with 10% extra for seams and fitting. Carpet is usually sold in 12 ft rolls, so ask the supplier how it will be cut.
Related sizes and guides
Related sizes
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.