Calculate how many tiles, planks, or boxes of flooring you need for any room. Supports square tiles, rectangular tiles, hardwood planks, and laminate. Includes wastage allowance and total cost.
Divide the room area by the tile area. Add 10% wastage for straight lay or 15% for diagonal. For a 5x4m room (20 sq m) with 600x600mm tiles (0.36 sq m each): 20/0.36 = 55.6, add 10% = 62 tiles.
Add 10% wastage for square or straight-lay patterns. Add 15% for diagonal (45-degree) patterns. Add 15-20% for oddly shaped rooms or natural stone tiles which have more variation.
A 10x10 ft (3x3m) room = 9 sq m. With 60x60cm tiles (0.36 sq m each): 9/0.36 = 25 tiles. Add 10% wastage = 28 tiles to order.
Common floor tile sizes: 600x600mm (most popular), 800x800mm (large format), 300x300mm (bathrooms), 600x300mm (rectangular). Larger tiles make a room look bigger but require flatter substrates.
Divide room area by coverage per box (typically 1.5-2.0 sq m per box). Add 10% wastage. For a 20 sq m room with 1.8 sq m/box: 20/1.8 = 11.1 boxes, add 10% = 13 boxes.
Flooring needed = (Room Length x Room Width x Wastage Factor) / Area per unit. Round up to whole units. Always order slightly more than calculated to allow for cuts, breakages, and future repairs.