Home, building & household
Calculation method and formula
round up(Floor area [m²] × (1 + Waste [%] ÷ 100) ÷ Coverage per pack [m²])
Understand the inputs
- Floor area
- Unit: m². Use a measured value or your own assumption.
- Waste
- Unit: %. Use a measured value or your own assumption.
- Coverage per pack
- Unit: m². Use a measured value or your own assumption.
Assumptions and limitations
The quantity includes your waste allowance and is rounded up to whole pieces or packs. Check layout, product dimensions, joints and return conditions before ordering.
The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.