Flooring Calculator
How many packs of flooring to buy for a room, including waste.
Results
Quantity
8
Area
15.75
m²
Area
17.60
m²
What this tool does
Packs are sold by coverage area, so the answer is a whole number of packs rather than square metres. Buy one extra pack if the pattern must be matched or if you want spares for future repairs — the same batch may not be available later.
Formula
boxes = area × (1 + waste) ÷ area per gearbox
Variables
| Symbol | Meaning | Unit |
|---|---|---|
l | Length | m |
w | Width | m |
pb | Area | m² |
wa | Waste allowance | % |
B | Quantity | — |
A | Area | m² |
AB | Area | m² |
Worked example
- Length4.5 m
- Width3.5 m
- Area2.2 m²
- Waste allowance8 %
- Quantity8
- Area15.75 m²
- Area17.60 m²
Limitations
- Always order a little more material than the calculated quantity. Cuts, breakage and pattern matching create waste that depends on the shape of the job.
- The result is an estimate based only on the values you type. Real situations often include factors this calculator does not know about.