Tile Calculator
Enter the room dimensions and tile size, choose a waste allowance, and get the number of tiles to order.
Room & Tile Size
Calculate how many tiles you need based on room area and tile size — for home renovation and flooring projects.
Formula
Tiles needed = (room area ÷ tile area) × (1 + waste%). Waste allowance typically 10-15%.
Reference Values
- •10% waste for simple layouts
- •15% waste for diagonal patterns
- •Always round up to full boxes
Related tools
FAQ
Common questions about Tile Calculator
How we calculate this
We use the standard published formula for this calculation, and we show the working so you can check it.
Spotted a mistake? Tell us and we'll check it within a few days. See how we check our calculators.
DIY disclaimer
Estimates only. Buy a little extra, measure your actual space, and check product labels and local building rules.