Free floor tile calculator: how many floor tiles and boxes you need. Enter floor area, tile size and waste percentage for living rooms, kitchens and bathrooms.
Tiling a floor means ordering ceramic tiles by the piece and by the box, and the numbers add up fast in a living room, kitchen or bathroom. This calculator turns your floor area, tile size and waste allowance into two numbers: the tiles to order and the full boxes to buy.
Enter the floor area, the size of your chosen floor tiles and the pieces per box (check the packaging). The waste slider defaults to 8%, which fits straight layouts in rectangular rooms; raise it for diagonal patterns, herringbone layouts or rooms with many corners. The result also shows how many tiles the waste allowance adds, so you know what you are paying for.
Measure the length and width of each rectangular section of the floor and multiply them, then add the sections together. Subtract the footprint of fixed cabinets or bathtubs that will not be tiled. For an L-shaped room, split it into two rectangles and add the areas.
Add 5-8% for straight layouts in rectangular rooms. Add 10-15% for diagonal or herringbone patterns and for rooms with many corners. Large-format tiles create bigger offcuts in small rooms, so keep the layout simple or raise the waste slider. Always round up to full boxes.
Not always. 60x60 cm or 80x80 cm tiles cover large areas quickly, but each cut piece is big, so an awkward room can waste more than with small tiles. The most economical size divides the room width and length evenly with few cuts - check this before ordering.