Using the Tile Calculator
Enter room dimensions in meters and tile dimensions in centimeters. The unit conversion happens before the areas are divided. The allowance increases the estimated count; it does not model the actual position of cut pieces, grout joints or a diagonal layout.
Worked example
Use the example inputs below to reproduce this result. These are the form's starting values, not recommended targets. Changing your inputs updates your result above; this worked example stays fixed for comparison. Results are rounded for display.
Example inputs
- Length (m)
- 5
- Width (m)
- 4
- Tile length (cm)
- 60
- Tile width (cm)
- 60
- Extra allowance (%)
- 10
Example result
- Area (m²)
- 20
- Tiles to buy
- 62
Method and assumptions
Divides floor area by tile area, applies waste allowance, and rounds up. Grout gaps, layout and cutting pattern are not modeled.
Turn an estimate into an order
A geometric quantity is a starting point for purchasing. Check whether the supplier sells by bag, box, mass or bulk volume, and use the stated coverage or yield to convert the result. Round only after accounting for the chosen allowance and packaging increments. For irregular spaces, divide the job into simpler sections and combine quantities with the same units.
Common question
Why can the installed quantity differ from the estimate?
The model uses area rather than a row-by-row layout. Room shape, cuts, pattern alignment and grout spacing can change the number of tiles needed. A layout plan is more precise when the room or pattern is complicated.
Guide updated .