Flooring for a 16 × 20 ft room (320 ft²)
Box counts depend on how much each box holds, which is printed on the box (20 to 25 ft² is common for laminate and vinyl plank).
| Layout and waste | Flooring to buy | Boxes at 20 ft² | Boxes at 24 ft² | Boxes at 30 ft² |
|---|---|---|---|---|
| 5% (Straight, simple room) | 336.0 ft² | 17 | 14 | 12 |
| 7% (Typical room) | 342.4 ft² | 18 | 15 | 12 |
| 10% (Diagonal or many cuts) | 352.0 ft² | 18 | 15 | 12 |
| 15% (Herringbone or patterns) | 368.0 ft² | 19 | 16 | 13 |
Before you buy
Measure into doorways and closets, and buy one extra box for future repairs, since dye lots vary. Let the flooring acclimate in the room for as long as the maker says. See the waste factors guide.
Want to change anything else? The calculator above is the full Flooring Calculator: edit any number and the results update instantly.
Tools & materials for this project
As an Amazon Associate we earn from qualifying purchases. These links do not change what you pay.
Frequently asked questions
How many boxes of flooring for a 16x20 room?
18 boxes at 20 ft² per box, including 10% waste (352.0 ft² needed for 320 ft² of floor). With 24 ft² boxes it is 15.
How much extra flooring should I buy for a 16x20 room?
5 to 10% for a simple straight layout, and 15% for diagonal or herringbone. For this room, 10% adds 32.0 ft².
How many square feet is a 16x20 room?
320 square feet (16 × 20). Add other rooms, hallways and closets you will floor, and measure into doorways.
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.