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Tile Calculator

Find how many tiles you need for a floor, with extra for cuts.

How it works

Floor area is length × width. Divide by the area of one tile, then add a percentage for cuts and breakage. The total is rounded up because you cannot buy part of a tile. 10% extra is typical, and 15% suits diagonal layouts.

Worked example

A bathroom floor is 4 m by 3 m, which is 12 square metres. Each tile is 0.3 m by 0.3 m (0.09 square metres). That is about 134 tiles for a perfect fit. With 10% extra for cuts, buy 147 tiles.

Tips

• Buy all tiles from the same batch so the colour matches.
• Add 15% or more for diagonal or patterned layouts.
• Keep a few spare tiles for future repairs.

Frequently asked questions

Which units should I use?

Any, as long as the room and the tile use the same one.

Why add extra tiles?

Cuts at the edges and the odd broken tile need spares, and later batches may not match in colour.

Does this include grout?

No. It counts tiles only. Grout needs depend on joint width and tile size.

Can I use it for walls?

Yes. Enter the wall height and width as the room length and width.

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