How Many 20x20 cm Tiles for a 1.5m x 1.5m Shower?
Calculate the number of 20x20 cm mosaic-style tiles needed for a 1.5m x 1.5m shower floor with 15% waste for cuts.
How to use this tool
- Enter room length, room width, tile length, tile width and waste allowance in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your tiles needed and the full breakdown beneath it.
Small shower floors need many cuts — calculate how many 20x20 cm tiles to buy for a 1.5m x 1.5m shower with extra waste allowance.
Frequently asked questions
- How many tiles do I need?
- Divide the total floor area by the area of a single tile, then add a 10% waste allowance for cuts and breakage.