About this calculator
Estimate tile quantity from surface size, tile size and waste.
Patterned layouts and many cuts often need a higher waste allowance.
Formula
Tiles = surface area × (1 + waste%) ÷ tile area, rounded up.
Example
A 4m × 3m floor is 12m² before waste.
Accuracy
NUMTX shows the assumptions next to the calculation so you can replace defaults with values that match your situation. For measurements, supplier rates, fees, interest, tax or regulated work, confirm important figures with the appropriate official or professional source.