How to Calculate Tiles for Any Room
Calculating the correct number of tiles before purchase prevents costly shortages and ensures your renovation stays on budget. Our tile calculator handles the math for any tile size and accounts for waste from cuts, breakage, and future repairs.
Step-by-Step Tile Calculation
- Step 1: Measure room length × width in meters → Room area in m²
- Step 2: Calculate tile area → (tile length cm × tile width cm) ÷ 10,000
- Step 3: Divide room area by tile area → Number of tiles needed
- Step 4: Add waste factor (10–20%) → Final quantity to purchase
Popular Tile Sizes & Coverage
| Tile Size | Tiles per m² | Best Use |
|---|---|---|
| 30×30 cm | 11.1 | Bathrooms, backsplashes |
| 45×45 cm | 4.9 | Medium rooms |
| 60×60 cm | 2.8 | Living rooms, halls (most popular) |
| 60×120 cm | 1.4 | Large, modern spaces |
| 80×80 cm | 1.6 | Premium flooring |
| 120×120 cm | 0.7 | Grand entryways, lobbies |
Waste Factor Guidelines
- 5–10%: Straight-lay pattern in a simple rectangular room
- 15%: Diagonal pattern (45° angle) — more cuts needed at walls
- 20%+: Herringbone, basket weave, or complex irregular rooms
Pro tip: Always buy 10–15% extra tiles. Tile designs get discontinued frequently. Matching a tile years later for repairs is often impossible without buying a full new batch.