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.
Everything You Need to Know Before Tiling Walls or Floors
Whether you're tackling a bathroom, kitchen or full open-plan floor, good prep = smooth install. Here's your all-in-one guide.
📏 Measuring Your Space
Multiply length × width to get your area. Break odd shapes into rectangles and add them up.
- 2m × 2.5m = 5m²
- 12ft × 10ft = 120ft² (approx. 11.15m²)
🧱 Tile Sizes & Formats
| Tile Type | Common Sizes | Best For |
|---|---|---|
| Ceramic | 300×300mm / 12×12in | Bathrooms, kitchens |
| Porcelain | 600×600mm / 24×24in | Floors, high-traffic |
| Metro | 100×200mm / 4×8in | Walls, splashbacks |
| Large Format | 600×1200mm+ | Big open spaces |
| Mosaic | Variable sheets | Accent walls, wetrooms |
🧮 How Much Extra to Order
- 10% extra for straight layouts
- 15% for diagonal/herringbone
- 20% for complex cuts or awkward rooms
🧰 What You’ll Need (Besides Tiles)
| Material | Purpose |
|---|---|
| Tile adhesive | Sticks tiles to surface |
| Grout | Fills gaps between tiles |
| Spacers | Keeps joints even |
| Trowel & float | Application tools |
| Tile cutter | For corners and edges |
| Backer board | For wet or uneven surfaces |
💸 Average Costs (Materials Only)
| Tile Type | UK (per m²) | US (per ft²) |
|---|---|---|
| Budget Ceramic | £10 – £20 | $1 – $3 |
| Porcelain | £25 – £50 | $4 – $8 |
| Natural Stone | £40 – £100+ | $6 – $15+ |
| Mosaic/Accent | £50 – £120+ | $8 – $18+ |
🧠 Pro Tips
- Buy from the same tile batch
- Dry lay a row to test layout
- Use levelling spacers for large tiles
- Round up to full boxes
- Match trims and corners
🌍 Metric vs Imperial
- 1m = 3.28ft
- 1in = 25.4mm
- 1m² = 10.764ft²
✅ Final Advice
- Sketch your layout
- Account for delivery time and returns
- Consider levelling compound for floors
- Plan tile cuts around doors/windows
Once ready, scroll up and use the calculator above to estimate tile count, area, and cost. Quick, easy, and mobile-friendly.
