How much tile you need for a 1.7×1.7 m bathroom
A 1.7×1.7 m bathroom has 15.2 m² of walls excluding the door and 2.9 m² of floor. Below is how much tile each surface takes.
Walls
Net area 15.2 m² (17 − 1.8) × (1 + 10%) = 16.72 m² ÷ 0.18 m² per tile = 93 pcs. Adhesive: 15.2 m² × 4 kg/m² (8 mm notch) = 61 kg. Grout ≈ 0.5 kg/m² = 7.6 kg. The 10% reserve applies to tiles only (for trimming); adhesive and grout are by net area.
Floor
Net area 2.89 m² (2.89 − 0) × (1 + 10%) = 3.18 m² ÷ 0.09 m² per tile = 36 pcs. Adhesive: 2.89 m² × 4 kg/m² (8 mm notch) = 12 kg. Grout ≈ 0.5 kg/m² = 1.4 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.