Total Area
Area = Length × Width
Tiles Required
Tiles = Area ÷ Tile Area
With Waste
Total = Tiles × (1 + Waste%)
Disclaimer
Results are estimates. Actual tile requirements may vary based on cutting, layout patterns, and room irregularities. Always order extra tiles.
Calculating the correct number of tiles for your project is essential for budgeting and ensuring you have enough materials. The basic principle is simple: divide the total area to be covered by the area of a single tile. However, several factors can affect the actual number of tiles needed, including grout spacing, layout pattern, and cutting waste.
Always account for waste when ordering tiles. For straight layouts, a 10% waste allowance is typical, while diagonal or herringbone patterns may require 15-20% extra due to increased cutting. Rooms with many corners, obstacles, or irregular shapes will also need additional tiles.
Straight Layout
The most common and economical pattern. Tiles are laid in a grid pattern with edges parallel to the walls. Requires less cutting and typically 5-10% waste allowance.
Diagonal Layout (45°)
Tiles are rotated 45° creating a diamond pattern. More visually interesting but requires more cuts along walls. Plan for 15-20% waste allowance.
- Measure twice: Always double-check your room measurements before ordering tiles.
- Account for grout: Grout lines add to the effective size of each tile, slightly reducing the number needed.
- Consider obstacles: Toilets, cabinets, and other fixtures affect tile layout and cutting requirements.
- Buy extra: Always order 10-15% more tiles than calculated. Keep extras for future repairs.
- Same batch: Ensure all tiles come from the same production batch to avoid color variations.