Tile Calculator
How many tiles do you actually need? Factor in cuts and breakage.
Tiles needed (before waste):
Tiles to buy (with waste):
Room area:
Related guide: How many tiles do I need?
How to use this calculator
Enter the room length and width, tile size in inches, and your waste allowance, then press Calculate. It returns the tiles needed before and after waste, plus room area.
What the result means
Tiles to buy includes the waste allowance for cuts, breakage and future repairs. Always round up to whole boxes — dye lots differ between batches.
Frequently asked questions
How much waste should I allow?
10% for a straight lay, 15-20% for diagonal patterns or irregular rooms.
Why can't I just buy more later?
Tile dye lots vary between batches, so a later box can look visibly different from the first.