Flooring Quantity Calculator
Enter your room dimensions to get the floor area, the quantity you should actually buy after wastage, and how many tiles or planks that works out to.
5–7% for straight layouts, 10%+ for diagonal or patterned.
Total floor area
300 sq ft
27.9 sq m
Recommended purchase area
321 sq ft
Includes 7% wastage
Estimated wastage allowance
21 sq ft
Cutting, breakage and shade matching
Estimated pieces needed
83
Each piece covers 3.88 sq ft
Estimated cost only. Actual material and labour prices vary by city, brand, quality, installation conditions and supplier. Always confirm current rates with local suppliers or installers before purchasing.
Worked example
A single 20 ft × 15 ft room at 7% wastage:
- Floor area: 20 × 15 = 300 sq ft
- Wastage allowance: 300 × 7% = 21 sq ft
- Recommended material: 321 sq ft
- At 600 × 600 mm (3.88 sq ft per tile): 83 tiles
Tiles are sold by the box, so round up to the next full box and keep the spare. Actual requirements depend on room shape, installation pattern and how much of each cut piece can be reused elsewhere.
How much wastage should you allow?
- 5% — one simple rectangular room, large tiles, straight layout
- 7–8% — typical apartment with several rooms and doorways
- 10–12% — diagonal layouts, many alcoves and columns, or small mosaic formats
- 15%+ — herringbone and chevron patterns, which cut every perimeter piece
Buy the full quantity in one lot. Tiles are made in batches and shade varies between them, so a top-up order weeks later rarely matches.
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- 1000 sq ft flooring cost
- 1200 sq ft flooring cost
5–7% for straight layouts, 10%+ for diagonal or patterned.
Total floor area
300 sq ft
27.9 sq m
Recommended purchase area
321 sq ft
Includes 7% wastage
Estimated wastage allowance
21 sq ft
Cutting, breakage and shade matching
Estimated pieces needed
83
Each piece covers 3.88 sq ft
Estimated cost only. Actual material and labour prices vary by city, brand, quality, installation conditions and supplier. Always confirm current rates with local suppliers or installers before purchasing.