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Room Area: Length × Width Total with Waste: Area × (1 + Waste% / 100) Boxes Required: ceil(Total / Coverage per Box)
Flooring Calculator: How Much Flooring Do I Need?
Australian homeowners spend an average of $4,200 on flooring per renovation (Houzz Australia, 2024). This calculator determines the exact square metres of flooring required, including wastage allowances for different laying patterns.
Wastage by Pattern
Pattern
Wastage %
Reason
Straight / Brick Bond
5–7%
End cuts only
Diagonal (45°)
10–15%
Angled perimeter cuts
Herringbone / Chevron
15–20%
Complex angled cuts
Formula
Total Flooring = Room Area (m²) × (1 + Wastage %). Divide by coverage per box and round up.
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