The Tile Calculator estimates the number of tiles needed for your floor, wall, or backsplash project based on the area dimensions and tile size. It factors in waste for cuts and breakage, helping you order the right quantity and avoid costly extra trips to the store.
How the Formula Works
Tiles needed = (Area to tile ÷ Area per tile) × (1 + Waste factor). Area per tile = Tile length × Tile width. Standard waste factor = 10–15%.
How to Use This Calculator
Enter the area dimensions (length and width)
Enter the tile size (e.g., 12×12, 18×18, 24×24)
Select a waste percentage (10% standard, 15% for diagonals)
View total tiles needed and total area coverage
Tips & Best Practices
Add 10% waste for straight layouts, 15% for diagonal patterns, 20% for complex designs
Buy all tiles from the same lot/batch number to ensure consistent color
Keep 5–10 extra tiles for future repairs — matching tiles later can be difficult or impossible
Larger tiles cover more area but require a flatter substrate and produce more waste at edges
Important Limitations
Does not account for grout lines (typically 1/16" to 1/4"), which slightly reduce tile coverage
Irregular room shapes may require more waste than calculated
Does not calculate adhesive, grout, or other installation materials needed