Tile Calculator
Tiles = ⌈(Floor area / Tile area) × (1 + Waste%)⌉
ConstructionHow to Use This Tool
How the Tile Calculator Works
Enter the floor dimensions, tile dimensions, and a waste percentage (typically 10%). The calculator tells you how many tiles to buy.
The Formula
Tiles needed = ⌈(Floor area / Tile area) × (1 + Waste %)⌉
Floor area = length × width (in meters)
Tile area = (tile length / 100) × (tile width / 100) (converting cm to m)
Why Add Waste?
You’ll need extra tiles for:
- Cutting tiles to fit at edges and corners
- Breakage during installation (5-10%)
- Future repairs (matching dye lots may be impossible later)
- Pattern matching (diagonal layouts waste more)
A 10% waste allowance is standard for simple layouts; use 15% for diagonal or patterned layouts.
Formula & Explanation
We round up to the nearest whole tile because you can't buy partial tiles. The waste percentage covers cuts, breakage, and future repairs.
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Frequently Asked Questions
How many 30u00d730 cm tiles do I need for a 4u00d73 m floor?
Floor area = 12 mu00b2. Tile area = 0.09 mu00b2. Tiles needed = 12 / 0.09 = 133.3 u2192 134 tiles. With 10% waste: u2308134 u00d7 1.1u2309 = 148 tiles.
Why do I need a waste allowance?
Tiles break during cutting, especially at edges and corners. You'll also want spares for future repairs u2014 matching the exact color and pattern later can be difficult. A 10% waste allowance is standard; use 15% for diagonal layouts.
How do I calculate tiles for a wall instead of a floor?
The same formula works u2014 just enter the wall's length and width (or height) instead of the floor's. For walls with doors and windows, subtract their area from the total wall area first.