Wall / Floor Tile Calculator
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Wall & Floor Tile Calculator (UK & USA)
This calculator helps estimate how many tiles you’ll need for your wall or floor project. Whether you’re tiling a bathroom in Birmingham or a kitchen in Kansas City, this guide ensures you get the right quantity with minimal waste.
Technical Guidance
- 🇬🇧 UK: Tiles typically measured in mm (e.g. 300x300mm, 600x600mm).
- 🇺🇸 USA: Common tile sizes include 12"x12", 18"x18", 12"x24".
- Allow 10–15% extra for cutting, breakage, and layout variations.
Popular Tile Sizes
| Region | Tile Size | Area Per Tile |
|---|---|---|
| UK | 300×300 mm | 0.09 m² |
| UK | 600×600 mm | 0.36 m² |
| USA | 12"x12" | 1 ft² |
| USA | 18"x18" | 2.25 ft² |
| USA | 12"x24" | 2 ft² |
Waste Allowance
| Layout Style | Recommended Waste |
|---|---|
| Straight Layout (Grid) | 10% |
| Diagonal / Offset Pattern | 12–15% |
| Complex Mosaic / Feature Wall | 15–20% |
Pro Tips
- Order all tiles from the same batch to avoid shade variation.
- Use tile spacers to ensure consistent grout lines.
- Dry-lay tiles before fixing to finalise layout and cuts.
Common Mistakes
- Not buying extra for cuts and future repairs.
- Skipping surface prep — leads to poor adhesion.
- Wrong tile adhesive for wall vs. floor use.
FAQs
- How many tiles do I need for 10m²?
Depends on tile size — for 600x600mm, you’ll need about 28 tiles + waste. - Can I use floor tiles on walls?
Usually yes, but check weight limits on drywall or plasterboard. - Should I use different grout for wall and floor?
Yes — floor grout needs to be stronger and more flexible. - How do I convert inches to millimetres?
1 inch = 25.4mm. Use our calculator to handle it automatically.
