How to use the tile quantity calculator
Work out how many tiles a floor needs, including an allowance for cuts and breakage. Enter room length, room width, tile length, tile width, waste allowance in the fields above; the tiles needed is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “how many tiles do I need”, “floor tile calculator”, “tile count room”, “calculate tile quantity”, “find tiles needed”.
Formula
Variables
- L — Room length (m)
- W — Room width (m)
- tl — Tile length (m)
- tw — Tile width (m)
- waste — Waste allowance (%)
Worked example
With room length = 4 m, room width = 3 m, tile length = 0.3 m, tile width = 0.3 m, waste allowance = 10 %, the calculator gives tiles needed ≈ 147 tiles.
Frequently asked questions
What is the tile quantity calculator used for?
Work out how many tiles a floor needs, including an allowance for cuts and breakage. It helps with questions such as “how many tiles do I need”, “floor tile calculator”, “tile count room”.
What is the formula for the tile quantity calculation?
Tiles needed (tiles) = ceil(L × W / (tl × tw) × (1+waste / 100)). Here L is room length (m), W is room width (m), tl is tile length (m), tw is tile width (m), waste is waste allowance (%).
What inputs do I need for the tile quantity calculator?
You need room length in m, room width in m, tile length in m, tile width in m, waste allowance in %. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the tile quantity calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the tile quantity result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.