Online Tile Calculator
Planning a wall or floor? Use our free Online Tile Calculator to estimate tiles, boxes and materials in a few clicks. Add rooms, choose your layout (straight, brick or herringbone), and include wastage. We’ll also estimate adhesive and grout per m² and help you jump straight to the right tiles, samples or expert advice.
How to measure your room
- Floors: measure the length and width, then multiply (L × W). If the space has sections or alcoves, measure each part and add the totals.
- Walls: measure width × height per wall. Subtract doors, windows and large openings.
- Add wastage: allow at least 10% for cuts and breakages. For patterns like herringbone or diagonal, add a little more.
Tip: our calculator supports multiple areas and lets you choose the layout so it can add an extra allowance for trickier patterns.
Doors, windows and boxed-in areas
Subtract the area of big openings. Small outlets usually get covered by cuts, but anything sizeable is best removed from your measurements. Steps, ledges and niches should be added as separate areas.
Tile sizes, layouts and extra wastage
Different patterns can increase offcuts:
- Straight/Grid: usually fine with 10% wastage.
- Brick/Staggered: plan a little extra.
- Diagonal & Herringbone: expect more cuts around edges; allow several percent extra.
Joint width: a tighter joint uses less grout, a wider joint uses more. Our results include a typical grout allowance, but always double-check with your tiler on the day.
Boxes, grout and adhesive — what to order
Tiles are often sold by the box. You can enter tiles per box or m² per box and we’ll round up, so you can order complete boxes without running short.
- Adhesive: coverage varies with substrate and trowel size. Our calculator uses a sensible per-m² guide to get you close.
- Grout: depends on joint width and tile thickness; our estimate is a practical starting point.
Once you’ve calculated, use the links below to find matching products or request help.
Choose your tiles
- Shop Floor Tiles
- Shop Wall Tiles
- Tile Adhesive & Grout
- Underfloor Heating
- Marble Tiles & Marble-Effect Tiles
- Order Samples or Request a Quote
Prefer help? Send us your room sizes and a photo — we’ll double-check your estimate and suggest the best options.
FAQs
How accurate is the Tile Calculator?
It’s a planning guide. Real rooms vary, and patterns or tricky edges can change the final quantity. Please confirm with your tiler before ordering.
Do I always need 10% wastage?
10% is a good starting point for straight layouts. Add more for herringbone, diagonal or very cut-heavy rooms.
Can I use feet and inches?
Yes. Switch to imperial in the calculator and we’ll convert everything into m² for you.
What about stairs, alcoves and niches?
Add them as separate areas. For stairs, measure each tread and riser size, then multiply by the number of steps.
How many boxes should I order?
Enter tiles per box or m² per box and we’ll round up to whole boxes. This avoids colour batch differences from topping up later.
How much adhesive and grout do I need?
Our calculator estimates per m² based on typical coverage. Adhesive depends on trowel size and substrate; grout depends on joint width and tile thickness.
Is marble suitable for bathrooms and kitchens?
Yes, with the right care. Polished marble looks stunning but may need sealing and cautious cleaning. If you want lower maintenance, consider marble-effect porcelain.
Do you offer samples and advice?
Of course. Order samples or message us with your plan and we’ll help you choose.
