Tile Calculator
Work out how many tiles you need for a floor or wall, including wastage.
Tiles for the area, plus spares
Tiling means covering an area with tiles of a known size, which is simple division until you account for the cuts and breakages that every job involves. This works out how many tiles you need from the area and tile size, and adds a wastage allowance, so you buy enough to finish without a shortfall.
Enter the area and tile size to see how many tiles to buy.
Why you always buy extra
The wastage allowance is not optional. Tiles at the edges of a room have to be cut, and cuts produce offcuts you cannot always reuse; some tiles break in handling; and awkward layouts waste more. A common allowance is around ten percent, more for a complex or diagonal pattern. There is a second reason to buy extra: keeping a few spare tiles from the same batch means a future breakage can be replaced with an exact match, since dye lots vary between runs.
Common questions
How much wastage should I add?
Around ten percent is typical, more for diagonal patterns or awkward rooms with lots of cuts.
Why keep spare tiles after the job?
So a future breakage can be replaced from the same batch — colours vary between production runs, so a later purchase may not match.
Is anything uploaded?
No. The calculation happens in your browser.