How it works
Estimate whole packs of flooring including a waste allowance. Irregular cuts and installation pattern can change material needs.
packs = ceil[area(1+waste)/pack area]
Worked example
Show example inputs and result
Floor area: 40 · Area per pack: 2.2 · Waste allowance: 10.
- Packs
- 20
- Area including allowance
- 44 m²
Questions and answers
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy