How the count is worked out
The area is converted to square metres, divided by the area of one tile in square metres, and increased by the extra you set for cuts and breakage. Both figures are rounded up to whole tiles. With the number of tiles per box, the calculator rounds up to whole boxes and prices them at your box price.
Before you order
- Order every box for one room from the same batch, so the shade matches.
- Allow more extra for large-format tiles, which break more often when cut.
- Skirting tiles are measured in running feet; use the room perimeter.
The room area calculator gives each room’s area and perimeter in both units.
Questions
How many tiles do I need for a room?
Divide the area to be tiled by the area of one tile, then add extra for cuts and breakage: about 10% for straight laying and 15% for diagonal or patterned layouts. Round up to whole tiles and whole boxes.
How many 600 × 600 mm tiles are in 100 sq ft?
One 600 × 600 mm tile covers 0.36 sq m, about 3.9 sq ft, so 100 sq ft needs about 26 tiles before extra, or 29 with 10% extra.
Can I use it for wall tiles?
Yes. Enter the wall’s length and height instead of length and width, and take out windows and doors by measuring the tiled part only.
Why do I need the tiles per box?
Tiles are sold by the box, and the count per box changes with size and brand. It is printed on the carton; with it, the calculator rounds up to whole boxes and prices them.