The short answer: measure the area in square metres (length x width), add 10% for cuts and breakages (15% for diagonal layouts or rooms with lots of cuts), then divide by the square metres in one box and round up. For example, a 2.4m x 2.5m bathroom floor is 6 sqm; plus 10% is 6.6 sqm; with tiles at 0.65 sqm per box you need 11 boxes.
Tile calculator
Enter your measurements above.
How to work it out yourself
- 1. Measure the area. Multiply length by width in metres. For an L shaped room, split it into rectangles and add them together. For walls, multiply width by height and subtract large openings such as windows and doors.
- 2. Add an allowance. Add 10% for a straight lay in a simple room. Add 15% for diagonal layouts, borders, small rooms with many cuts, or patterns that need careful framing.
- 3. Divide by box coverage and round up. Divide the total by the square metres in one box. Always round up to a full box.
Worked examples
| Project | Area + allowance | Box size | Boxes needed |
|---|---|---|---|
| Bathroom floor, 2.4m x 2.5m, straight lay | 6 sqm + 10% = 6.6 sqm | 0.65 sqm (223 x 223mm) | 11 boxes |
| Same bathroom floor | 6.6 sqm | 1 sqm (200 x 200mm, 25 pieces) | 7 boxes |
| Laundry floor, 1.8m x 2.2m, straight lay | 3.96 sqm + 10% = 4.36 sqm | 1.4 sqm (197mm on 592mm) | 4 boxes |
| Hallway, 1.2m x 6m, diagonal | 7.2 sqm + 15% = 8.28 sqm | 1.12 sqm (305 x 305mm) | 8 boxes |
Box sizes for our pattern tiles
Box coverage varies from range to range, even between tiles of the same size, so always check the box coverage on the tile's own page.
| Tile format | Coverage per box | Examples |
|---|---|---|
| 200 x 200mm porcelain, 25 pieces | 1 sqm | KC954, KC944, KC908, KC909, KC930, KC898, KC859, KC962, Arc series |
| 200 x 200mm porcelain, 15 pieces | 0.6 sqm | KC895, KC896, KC902, KC904, KC905 |
| 223 x 223mm porcelain, 13 pieces | 0.65 sqm | KC846, KC848, KC872, KC900, KC914, KC929, KC937, KC965, KC966, KC967 |
| 225mm pattern on 450mm scored tile, 5 pieces | 1 sqm | KC933, KC941, KC942, KC861, KC882, KC864, KC866, KC996, KC997 |
| 225mm pattern on 452mm scored tile, 5 pieces | 1.02 sqm | KC931, KC932, KC873 |
| 197mm pattern on 592mm scored tile, 4 pieces | 1.4 sqm | KC832, KC834, KC835, KC836, KC837, KC838, KC839 |
| 305 x 305mm porcelain, 12 pieces | 1.12 sqm | KC910, KC911, KC912, KC913 |
| 110mm pattern on 330mm scored tile, 10 pieces | 1.09 sqm | KC867, KC868, KC924 |
| 250 x 250mm porcelain, 16 pieces | 1 sqm | KC851 |
Tips before you order
- Order everything at once. Tiles are made in batches, and colour can vary slightly between batches. Buying all your tiles together keeps them consistent.
- Keep a few spares. Store a few spare tiles from the same batch for future repairs.
- Plan the pattern. With pattern tiles, your tiler may want extra to centre the design in the room or frame it with a border.
- Ask us. Bring your measurements or plans to the showroom and we will help you work out quantities. Delivery is available and is quoted based on your delivery area, the quantity ordered and pallet size.
Browse over 150 different pattern tile designs from Spain in our pattern tile gallery, or read about choosing pattern tiles for bathroom floors.