以下のガイドはまだ日本語に翻訳されていないため、英語で表示しています。計算機自体はすべて日本語に対応しています。
この計算機の使い方
- Enter the length and width of the area to tile.
- Enter the tile size and grout joint width.
- Choose a waste allowance: about 10% for straight lay, 15% for diagonal or herringbone patterns.
- Enter how many tiles come in a box.
計算式
Each tile effectively covers its own size plus one grout joint in each direction.
Tiles = area ÷ ((tile length + grout) × (tile width + grout)) × (1 + waste)
Boxes = ⌈tiles ÷ tiles per box⌉
Example
- 12 × 10 ft = 120 ft² with 12 × 12 in tiles and 1/8 in grout.
- Each tile covers (12.125 in)² ≈ 1.021 ft² → 117.5 tiles.
- With 10% waste: 130 tiles, or 13 boxes of 10.
よくある質問
Should I buy extra tiles?
Yes. Keep a few spares from the same production batch (dye lot) for future repairs, because colours can vary between batches.
What grout width should I use?
1/16–1/8 in (2–3 mm) for rectified tiles, and 3/16–1/4 in (5–6 mm) for handmade or uneven tiles. Follow the tile manufacturer's recommendation.
How do I tile an irregular room?
Split it into rectangles, calculate each area, and add them up, or use the square footage calculator and enter the total area.