Calculate how many tiles you need for floor and wall projects with pattern-specific waste factors.
Part of the Surfaces & Finishes calculators — see all tools in this category.
Total floor or wall area to tile
Subtract for drains, fixtures, etc.
Common: 300, 600, 800
Common: 150, 300, 600
Pattern waste: 10%
Add extra for complex cuts or irregular shapes
Check tile packaging for tiles per box
Includes 10% waste (10% pattern + 0% additional)
Without waste factor
Total tiling area
300 × 300 mm
Measure the length and width of your floor or wall in meters. Multiply to get total area in m². For multiple rooms or walls, calculate each separately and add them together.
Measure any permanent fixtures or openings (toilets, drains, cabinets, doorways). Subtract these from your total to get net tiling area. This prevents over-ordering for areas you will not tile.
Select your laying pattern. Straight patterns create clean, modern lines with minimal waste. Diagonal adds visual interest but requires more cuts. Herringbone creates a classic look but needs the most material and skill.
The calculator divides net area by tile size and applies pattern-specific waste. Result shows exact tiles needed. If you enter tiles per box, it also calculates boxes to order. Always round up—running short during installation is costly.
Waste factor accounts for cuts, breakage, and pattern matching. Straight patterns align with room edges, minimizing cuts to perimeter tiles only. Diagonal patterns require every edge tile to be cut at 45°. Herringbone demands precise angles and intricate fitting throughout, generating the highest waste. Complex room shapes or obstacles increase waste further.
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