Tile Calculator
How many tiles you need for an area, with a cutting allowance.
Results
Tiles needed
74
Tiles needed
67
Area
0.1800
m²
What this tool does
Divide the surface by the area of one tile and add an allowance for cuts and breakage. Ten percent suits a simple rectangular room; diagonal layouts, patterned tiles and rooms with many corners need fifteen or more.
Formula
n = area ÷ (length × width) × (1 + waste)
Variables
| Symbol | Meaning | Unit |
|---|---|---|
a | Area | m² |
tl | Tile length | cm |
tw | Tile width | cm |
wa | Waste allowance | % |
N | Tiles needed | — |
NN | Tiles needed | — |
TA | Area | m² |
Worked example
- Area12 m²
- Tile length60 cm
- Tile width30 cm
- Waste allowance10 %
- Tiles needed74
- Tiles needed67
- Area0.1800 m²
Limitations
- Always order a little more material than the calculated quantity. Cuts, breakage and pattern matching create waste that depends on the shape of the job.
- The result is an estimate based only on the values you type. Real situations often include factors this calculator does not know about.