How many boxes of flooring for a 4 x 5 m room?
11 boxes of 2 m² flooring
The short answer
A 4 × 5 m room is 20 m². Adding 10% for cuts gives 22 m². Boxes that cover 2.0 m² each mean 11 boxes, and 2.2 m² boxes mean 10. A diagonal or herringbone pattern needs about 15% spare, which is 12 boxes of 2 m².
How it is worked out
- Floor area: 4 × 5 = 20 m²
- Add 10% spare: 22 m²
- Divide by 2.0 m² per box: 11 → 11 boxes
Other sizes and options
| Coverage per box | Boxes, 10% spare | Boxes, 15% spare |
|---|---|---|
| 1.6 m² | 14 | 15 |
| 2.0 m² | 11 | 12 |
| 2.2 m² | 10 | 11 |
| 2.5 m² | 9 | 10 |
What can change the amount?
Check the exact coverage printed on the box, since it varies by product. Rooms with lots of doorways, pipes or angled walls need extra spare, and one leftover box is worth keeping for repairs.
Try the floor in your roomRoomveil opens with these measurements filled in. Change them to match your room, see the result on a photo, and get the exact amount. Free, no sign-up.Open in Roomveil
Worked out with common rules of thumb and code minimums, for planning. Check the product label, the maker's instructions and your local building code before you buy or build. More detail in the Flooring calculator guide.