How this calculator works
Tiles = ceiling(surface area ÷ tile area × (1 + waste/100)).
Formula
tiles=ceil(area/tile area×(1+w/100))Whole tiles required from surface area, tile dimensions and waste allowance.
Worked example
Verified example is a verified test case used by the calculation engine.
Assumptions and limitations
- Surface area is entered in square metres.
- Tile dimensions are entered in centimetres.
- The final quantity is rounded upward to a whole tile.
Methodology & sources
This calculator uses deterministic, versioned calculation logic. The formula and verified examples above are part of the calculation definition used by CalcuMint.
- NIST SI Guide — Supports consistent dimensional and SI-unit treatment for geometric calculations.
Frequently asked questions
Why is the answer rounded up?
Tiles are purchased as whole units, so the deterministic result uses the mathematical ceiling.
Does waste account for a pattern?
No. Enter the waste percentage you consider appropriate for the installation.