Tile Cost Calculator
Estimate total tile project cost — materials, adhesive and labour.
Open Tool →Tile Calculator
Calculate how many tiles you need for any floor, bathroom, wall or ceiling — enter dimensions in metres, cm or square feet and get an instant count with wastage included.
What are you tiling?
Unit of measurement
Room / Area Dimensions
For bathrooms & kitchens — run the calculator separately for floor, then each wall.
Tile Dimensions (cm)
Common sizes (click to fill):
10%
10% straight cuts · 15% bathroom/complex · 20% diagonal / large format
Tiles to Buy (incl. wastage)
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Tiles Without Wastage
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Extra for Wastage
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Area (m²)
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Area (sq ft)
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Area (cm²)
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Tile Calculator — Floor, Bathroom, Ceiling & Wall Tiles in m², cm or Sq Ft
Whether you're tiling a bathroom floor, kitchen splashback, feature wall or suspended ceiling grid, the question is always the same: how many tiles do I need? Our free tile calculator answers that instantly — in metres, centimetres, or square feet — with a built-in wastage buffer so you never run short. Tiles come in fixed batch lots; a discontinued shade can be impossible to match months later, making accurate ordering critical.
If you want the full step-by-step planning workflow before ordering, read the Ultimate Tile Calculation Guide for layout strategy, measurement rules, and material planning basics.
The Tile Calculation Formula
The core formula: Tiles = ⌈ (Room Area ÷ Tile Area) × (1 + Wastage%) ⌉ — always rounding up. Example:
- Room: 5.4 m × 3.8 m = 20.52 m²
- Tile: 60 cm × 60 cm = 0.36 m² per tile
- Base: ⌈20.52 ÷ 0.36⌉ = 57 tiles + 10% wastage = 63 tiles
Bathroom Tile Calculator — Why Bathrooms Need Special Treatment
A bathroom has multiple surfaces: floor, walls, shower ceiling, bath panel. Each surface is usually a different size or material. The floor must be slip-rated (R10 minimum for residential wet areas); wall tiles don't carry load so they can be thinner and lighter. Always calculate floor and walls separately and add the counts. Use at least 15% wastage for bathrooms — pipe penetrations, tap holes, and bath edges create far more cuts per m² than open floors.
Ceiling Tile Calculator
Suspended grid tiles (60×60 cm or 2 ft × 2 ft standard) follow the same formula — area ÷ tile area, round up, plus 10% for perimeter cuts. Switch to Feet / Sq Ft mode for imperial grid systems. For a 4 m × 5 m ceiling: 20 m² ÷ 0.36 = 55.6 → 56 + 10% = 62 ceiling tiles.
Tile Calculator in Square Feet
US, Canadian and many South Asian projects measure in sq ft and inches. Switch the unit toggle to Feet / Sq Ft — enter room in feet, tile size in inches. Common US tile sizes: 12×12 in, 18×18 in, 24×24 in, 12×24 in plank. Results show in both sq ft and m².
Tile Calculator in Centimetres
European and South Asian retailers list tiles in centimetres — 60×60 cm, 30×60 cm, 80×80 cm. Select Centimetres mode to enter both room and tile size in cm directly. Output always includes m² to cross-check with packaging.
How Much Wastage Should I Allow?
- 10% — Simple rectangular room, straight grid laying, minimal obstacles
- 15% — Bathroom, kitchen, L-shaped room, or multiple obstacle penetrations
- 20% — Diagonal layout, herringbone, chevron, large-format (≥80 cm), natural stone
Always keep 5–10 spare tiles after the job for repairs. Matching batch numbers two years later is often impossible.
Floor vs Wall vs Ceiling Tiles — Quick Comparison
| Type | Key requirement | Wastage guide |
|---|---|---|
| Floor tiles | PEI Class 3+ wear rating; R10 slip for wet areas | 10–15% |
| Wall tiles | Lighter, thinner; no PEI or slip rating needed | 10–15% |
| Bathroom tiles | Waterproof system; wet zone compliance | 15–20% |
| Ceiling tiles | Fire Class 1 surface spread; acoustic rating | 10% |
Tile Size Guide
- Large format (600×600 mm+) — Modern, minimal grout lines; makes small rooms feel larger. Use 15–20% wastage.
- Medium format (300×600 mm, 400×400 mm) — Versatile for floors and walls. Most popular in kitchens and bathrooms.
- Small format / mosaic (100×100 mm, 150×150 mm) — Feature areas, shower niches, splashbacks, borders.
How Many Boxes to Buy
Tiles are sold by the box. Each box states its m² coverage on the label — typically 1.0–1.5 m² per box for medium-format tiles. Divide total tiles by tiles-per-box and always round up to a whole box. If you are still not sure, then see more about how much tile you must buy and the full tile calculation planning guide.
Frequently Asked Questions
Divide the total area (length × width) by the area of one tile, then multiply by (1 + wastage%). Always round up. Example: 12 m² room, 60×60 cm tiles, 10% wastage → (12 ÷ 0.36) × 1.10 = 36.67 → 37 tiles. This calculator does it instantly — enter your dimensions above.
Calculate floor and each wall separately, then add the counts. Use at least 15% wastage for bathrooms due to pipe cutouts, tap holes and bath edges. A 1.8 m × 2.5 m floor with 30×60 cm tiles at 15% wastage needs about 28 tiles. Select "Bathroom" above to set the recommended default.
Yes. Select "Ceiling" in the room type row, enter ceiling length and width, and enter your tile size (60×60 cm or 2 ft × 2 ft for standard grid tiles). 10% wastage is applied automatically for perimeter cuts.
Switch the unit toggle to Feet / Sq Ft. Enter room dimensions in feet and tile dimensions in inches. Results show in both sq ft and m² so you can shop from any supplier.
10% — simple rectangular rooms, straight grid laying.
15% — bathrooms, kitchens, L-shaped rooms, multiple penetrations.
20% — diagonal patterns, herringbone, large-format (≥80 cm), natural stone.
15% — bathrooms, kitchens, L-shaped rooms, multiple penetrations.
20% — diagonal patterns, herringbone, large-format (≥80 cm), natural stone.
A 10×10 ft room = 100 sq ft (≈9.3 m²). With 12×12 in tiles + 10% wastage → ~110 tiles. With 18×18 in tiles → ~50 tiles. Switch to Feet mode above and enter your tile size for an exact count.
Always. Floor tiles must be rated for foot traffic and slip resistance; wall tiles are not. They are usually different sizes and materials. Run the calculator once for the floor, then once per wall.
Divide each cm dimension by 100, then multiply. 60×60 cm = 0.60 × 0.60 = 0.36 m². 30×60 cm = 0.30 × 0.60 = 0.18 m². The calculator does this automatically when you use cm or metres mode.