What this tool does
Divide the surface area by one tile’s area, then add allowance for cuts and breakage before rounding to purchasable quantities.
How to use it
- Enter the surface length and width in metres.
- Enter tile width and height in centimetres, plus an optional waste rate and tiles per box.
- Review the base tile count, allowance-adjusted count and boxes.
Formula and method
Surface area = length × width. Tile area in m² = width(cm) × height(cm) ÷ 10,000. Divide the areas, add the allowance, and round tile and box counts up.
Example
A 4×3m surface with 60×60cm tiles needs 34 tiles before allowance. At 10% it needs 37 tiles; with 4 per box, buy 10 boxes.
Useful for
- Planning wall or floor tile purchases
- Comparing tile formats
- Estimating spare tiles for cuts
Limits and notes
Grout width, diagonal layouts, complex edges, pattern direction and matching production lots are not modelled. Check the installer’s layout and the manufacturer’s recommended spare quantity.
Frequently asked questions
What if I do not know tiles per box?
Leave it blank or enter zero to calculate the required number of individual tiles only.
Which waste rate should I choose?
It depends on the layout and cuts. Diagonal or patterned layouts often need more allowance than a simple straight layout.