How much tile you need for a 1.5×1.7 m bathroom
A 1.5×1.7 m bathroom has 14.2 m² of walls excluding the door and 2.6 m² of floor. Below is how much tile each surface takes.
Walls
Net area 14.2 m² (16 − 1.8) × (1 + 10%) = 15.62 m² ÷ 0.18 m² per tile = 87 pcs. Adhesive: 14.2 m² × 4 kg/m² (8 mm notch) = 57 kg. Grout ≈ 0.5 kg/m² = 7.1 kg. The 10% reserve applies to tiles only (for trimming); adhesive and grout are by net area.
Floor
Net area 2.55 m² (2.55 − 0) × (1 + 10%) = 2.81 m² ÷ 0.09 m² per tile = 32 pcs. Adhesive: 2.55 m² × 4 kg/m² (8 mm notch) = 10 kg. Grout ≈ 0.5 kg/m² = 1.3 kg. The 10% reserve applies to tiles only (for trimming); adhesive and grout are by net area.
Use tiles from one batch (the batch/shade is printed on the pack) — otherwise the colour difference shows on the wall.
Ceiling height 2.5 m, one door, walls tiled to the ceiling. 300×600 mm tile on the walls, 300×300 mm on the floor, straight lay, 10% cutting allowance.
If yours differs — open the calculator and change the dimensions, it will recalculate.