Materials
Flooring packs
- where
- order area (m²)
- net area (m²)
- waste (%)
- whole packs
- pack coverage (m²)
Explain this equation
Works out how many packs of flooring to buy from the net floor area, a waste allowance and the coverage stated on the pack.
A is the net area to be covered, in m². w is the waste percentage. Ao is the area to order once waste is added. c is the coverage of one pack in m². N is the number of whole packs. The calculator also shows the coverage you will actually receive.
The waste factor (1 + w/100) increases the area to cover cuts and offcuts. Dividing by pack coverage gives the number of packs, and ⌈ ⌉ rounds up to whole packs.
20 m² with 10% waste is 22 m²; at 2.2 m² per pack that is exactly 10 packs. Patterns such as herringbone usually need a higher waste figure.
Watch out: use the coverage printed on the pack, not a calculation from board sizes. The two can differ.
Estimate flooring packs from net area and declared pack coverage.
Enter your values to see the result.
Good to know
Use product coverage, pattern-specific waste and manufacturer expansion requirements. Does not establish a laying layout.
Limits
Flooring gaps, slide clearances, fire-door gaps, fixing schedules and finishes must follow the design and product instructions.
Sources
This is a calculation aid, not a structural design or compliance certificate. Every default is an example, not a specification for your project.