Calculate how many tiles you need for a floor or wall, including cuts, waste, and full packs.
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.
Enter data and click Calculate.
Tiles = ceil((area − openings) ÷ tile area × (1 + waste/100)). Tile area comes from width × height unless a custom tile area is given. Layout adds extra waste points on top of the base waste %. Packs = ceil(tiles ÷ tiles per pack).
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.
For a straight layout, 5-10% is often enough. If you install tiles diagonally, in a herringbone pattern, or in a room with many corners and niches, 10-15% is usually safer.
Usually not. In practice, the most important thing is the real tile format and an allowance for cuts. If the calculator uses an “effective tile area with grout” field, use that value directly.
Because you cannot buy a fraction of a tile. Even if the raw calculation gives 44.2 pieces, in practice you need at least 45 tiles, and often a full box.
Mathematically yes — you still divide the total covered area by the area of one tile. The practical difference is that walls usually involve more niches, outlets, and detailed cuts.
Yes, especially if the collection may disappear from the market later. One or two spare tiles — or even one extra box — can save a repair job in the future.
Both matter during planning, but box count is more important for purchasing. It tells you how much you actually need to order and pay for.
Often yes. Large and long tiles look modern, but in more difficult layouts they usually create more waste at edges, thresholds, and wall transitions.
The next step is usually the tile adhesive calculator. If you still do not know the total floor area, first use the floor area calculator.