How it works
Calculate your material requirement
Calculate tile square footage, waste allowance, square meters, and boxes for floors, walls, and repeated rectangular areas.
The formula
Tile to purchase = length × width × quantity × (1 + waste percentage). Boxes = adjusted tile area ÷ coverage per box, rounded up.
Worked example
A 12 ft × 10 ft floor contains 120 ft². With 10% for cuts and waste, purchase at least 132 ft², or 9 boxes that cover 15 ft² each.
Before you order
- Diagonal layouts and large-format tile may require a larger allowance.
- Calculate walls, niches, and floors as separate rectangles, then add them.
- Keep extra matching tile for future repairs when practical.