Tile Calculator

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The number of tiles you need is the area to cover divided by the area of one tile, plus a little extra for the grout gaps and cuts. Our free online Tile Calculator estimates how many tiles are required to cover a floor, wall or any surface — just enter the area to cover, the tile size, and the gap size between the tiles.

Tile Calculator

AREA TO COVER
TILE SIZE
GAP SIZE
result

Q&A

Information about the Tile Calculator

• How do I calculate the required amount of tile for covering the area? Basically, the first thing to do is calculating the size of the area to be covered. In most cases it is a rectangle which has two dimensions (width, length). This have to be multiplied each other to give the surface to be tiled. If you want to know exactly how many tiles you need, then you have to divide the result by the size of the tiles. That’s how our calculator works.

• Can I calculate with title gaps and/or overlaps? Sure! Our Tile Calculator can deal with gaps and overlaps, too. If the tiles somehow overlap each other, you should give a negative value as overlap.

Tile Calculator - what is a gap?

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Frequently asked questions

How do I calculate how many tiles I need?

Divide the area you want to cover by the area of one tile, then add a margin for cuts and waste. The calculator does this and accounts for the grout gap.

How much extra should I buy for waste?

A common rule is to add about 10% extra for straight layouts and 15% for diagonal or patterned ones, to cover cuts and breakages.

Does the calculator include the grout gap?

Yes. You can enter the spacing between tiles, and the calculator factors it into the number of tiles needed.

How do I measure the area to tile?

Multiply the width by the height of each surface, in the same unit, and add the areas together for an irregular room.

Can I calculate tiles for a wall?

Yes. The calculator works for floors, walls and any flat surface — just enter the surface area and the tile size.