Enter the area to tile and one tile in centimeters. The calculator divides area by one tile, adds waste, and rounds up. A living room of 18 m² at 60×60 cm and 10% waste is 56 tiles; a 7.2 m² bath at 30×60 cm and 12% is 45.
This calculator estimates the number of tiles based on total area, tile size, and cutting waste. If tiles are sold in boxes, round the result up to full packs. You can calculate adhesive separately in the tile adhesive calculator. Measure area with the floor area calculator. Article: how many tiles to buy.
Area to tile, Tile width (cm), Tile height (cm) and Custom tile area (m²). The result shows up here.
The tile calculator tells you how many pieces to buy for a floor or a wall. The formula is area minus openings, divided by one tile, times 1 plus waste, then round the piece count up. Tile area comes from width and height in centimeters unless you type a custom area in m². A straight layout adds nothing, a diagonal adds 5 waste points, herringbone adds 10. Packs round up: tiles divided by tiles per box.
In an 18 m² living room a 60×60 cm tile is 0.36 m², so you start near 50 pieces. Ten percent for cuts at walls and a doorway rounds up to 56. A 7.2 m² bath at 30×60 cm and 12% waste is 45 pieces, because a small room eats more cuts at the tub and drain. A long 20×120 cm format on 24 m² at 15% with 8 tiles per box is 115 tiles, 15 full boxes.
Type the area to tile, then tile width and height in cm. Waste, openings, layout, pack size, and price sit in the advanced fields and can stay empty. A comma and a period are the same, so 7.2 and 7,2 are one area. If you already know the tile area with grout, type that custom tile area instead of the centimeter sides.
Tile adhesive lives on its own page from area and kg/m². Raw rectangle area is on floor area: 5 by 4 m is 20 m², which you paste back here. Paint and plaster count walls, not tile pieces.
Stores sell whole tiles and whole boxes. 44.2 pieces means at least 45, and with eight in a box you still buy full packs. A large format and herringbone need more waste than a straight 5-10% layout. You do not subtract 2 mm grout lines: 8-12% waste usually covers them.
Twenty square meters at 60×60 cm and 10% waste is 62 pieces. Twelve square meters at the same size and 10% is 37. Type 18, 60, and 60, set 10%, and match 56 on the first card.
Area divided by one tile, plus waste, rounded up. A living room of 18 m² at 60×60 cm and 10% is 56 tiles.
You need 56 tiles
This is a typical case for a straight layout in a living room or open-plan area. Even with large tiles, it is worth adding waste because cuts along walls and transitions quickly consume extra pieces.
You need 45 tiles
In small rooms, waste is often proportionally higher than in large rooms because more pieces need to be adjusted around corners, niches, and drains.
You need 115 tiles
That equals 15 full boxes
Long-format tiles usually require a bigger margin for cuts and selection. In real purchasing, the final decision is based on full boxes rather than individual pieces.
One tile is 0.36 m². 20 / 0.36 ≈ 55.56, plus 10% waste is about 61.1, so 62 pieces after rounding up.
56 pieces, as on the first card. Without waste you would be near 50; cuts add the rest.
A straight layout often uses 5-10%. Diagonal, herringbone, niches, and large formats sit closer to 10-15%. The layout list adds 5 or 10 points on top of the base waste.
45 pieces. A small bath usually wastes a higher percent because more cuts sit at corners and the drain.
115 tiles, which is 15 full boxes. You buy packs, not a fraction of a tile.
Not in this formula. You count pieces from tile area and waste. Grout shaves a fraction, and the store still sells whole tiles.
12 / 0.36 = 33.33, plus 10% is 36.67, so 37 pieces. Count boxes from 37, not from 33.
On the tile adhesive page. Area without tiles is on floor area: 5 by 4 m is 20 m².
Yes: area divided by one tile plus waste. On a wall you more often deduct openings and expect more cuts.
Round up. 44.2 is at least 45, and with boxes you often take one more full pack.
Volume and waste come from the sizes you type. Below are volume and NIST SI units.
Page updated in 2026.
