Tile Calculator
Find how many tiles and boxes you need for an area, including a waste allowance for cuts.
How to use it
- Enter the area The floor or wall area in square metres.
- Enter the tile size Width and height of one tile in centimetres.
- Add a waste margin 10% is typical for cuts and breakages.
Examples
| 10 m², 50×50 | 44 tiles (10% waste) |
|---|---|
| 10 per box | 5 boxes |
About this tool
Ordering tiles means accounting for the area, the tile size and the inevitable cuts around edges and fixtures. This calculator combines all three: it works out the exact number of tiles, adds your waste allowance, and rounds up to whole boxes.
A 10% waste margin suits most straight layouts; increase it for diagonal designs or awkward rooms. Buying from the same batch matters for colour consistency, so it’s worth a little extra. Everything is computed in your browser.
Frequently asked questions
How much waste should I allow?
Around 10% is standard for straight layouts, and 15% or more for diagonal patterns or rooms with many cuts.
How are boxes worked out?
If you enter the tiles per box, the calculator rounds the total up to whole boxes so you buy enough.
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Updated June 14, 2026