How this calculator works
Estimate floor or wall tile quantities using actual tile dimensions. The result includes a waste allowance for cuts, breakage and future repairs.
Formula
Tiles = area ÷ tile face area × (1 + waste). Boxes = tiles ÷ tiles per box, rounded up.
Tiles = area ÷ tile face area × (1 + waste). Boxes = tiles ÷ tiles per box, rounded up.
Example
A 12 × 10 ft floor is 120 sq ft. With 10% waste, the purchase target becomes 132 sq ft.
Reliability check
Dry-lay the chosen pattern or draw a scaled grid. Verify actual tile dimensions, tiles per carton, excluded zones, niches and edge cuts before using the rounded box count as a purchase order.
How to get a better estimate
- Use 10% waste for simple layouts and more for diagonal or complex cuts.
- Verify actual tile dimensions; nominal sizes can differ.
- Keep spare matching tiles for future replacement.
What the result means
Layout has a large effect on tile waste. Diagonal patterns, niches, borders, centered layouts and many short edge cuts normally need a larger allowance than a simple rectangular floor.
Reference tables
Compare your tile size, waste allowance and tiles-per-box with the 12 × 24 in worked examples.