Calculate the number of tiles needed for any floor or wall project, including waste and grout spacing.
| Size | Best For |
|---|---|
| 4×4" | Bathroom walls, backsplash |
| 6×6" | Shower walls |
| 12×12" | Floors, most rooms |
| 13×13" | Larger floor areas |
| 16×16" | Large rooms |
| 18×18" | Open spaces |
| 12×24" | Modern look, large rooms |
| 24×24" | Commercial / large spaces |
| 3×6" subway | Backsplash, walls |
| 2×2" mosaic | Shower floors, accents |
| Joint Width | Use Case |
|---|---|
| 1/16" | Rectified tiles, tight fit |
| 1/8" | Most floor & wall tiles |
| 3/16" | Natural stone, handmade |
| 1/4" | Exterior, large tiles |
| 1/2"" | Masonry, brick-look |
Calculate exactly how many tiles you need for your flooring or wall project with our free tile calculator, including a waste allowance for cuts and breakage.
Tiles Needed = (Room Area ÷ Tile Area) × (1 + Waste Percentage). A waste allowance (typically 10-15%) accounts for cuts, breakage, and pattern matching.
10% is typical for straightforward layouts; diagonal patterns or rooms with many cuts/corners often warrant 15-20% to be safe.
Yes, buying a few extra beyond even the waste-adjusted total is wise for future repairs, since matching tile batches later can be difficult if the product is discontinued.
Generally yes, larger tiles in irregularly shaped rooms can produce more waste from cuts than smaller tiles that fit more flexibly.
Break the room into rectangular sections, calculate each separately, then sum the totals before applying your waste percentage.