How to calculate floor tiles for an Australian room
Start with the room area: length × width = m². Divide by the tile area to get individual tile count, then divide by tiles per box to get box count. Always add a waste margin — cutting tiles means offcuts, and tiles can crack during installation or be needed for future repairs.
Standard Australian tile sizes
The most common floor tile sizes sold in Australia are 600 × 600 mm (popular for living areas and kitchens), 600 × 1200 mm (large format, increasingly popular), and 300 × 300 mm (bathrooms, wet areas). Wall tiles are often smaller — 300 × 600 mm is a common bathroom wall tile.
How much waste margin should I add?
- 5% — simple square or rectangular room, straight grid lay, experienced tiler
- 10% — standard for most projects, recommended default
- 15% — diagonal (45°) lay, L-shaped rooms, lots of cuts around obstacles
Always buy a few extra tiles from the same batch and store them. Tile colours vary between production batches — if you need to replace a cracked tile years later, an exact match from a different batch is almost impossible.
Plank flooring — hybrid, laminate or timber?
Hybrid flooring (rigid core SPC or WPC) is the dominant choice in Australian homes — it's waterproof, dimensionally stable in Queensland heat and humidity, and click-locks without adhesive. Laminate is cheaper but not suitable for wet areas. Engineered timber is beautiful but more sensitive to moisture and temperature fluctuations.
Plank flooring is sold by the box with coverage in m² printed on the label. The box coverage is what matters — enter it directly into this calculator.
Carpet and sheet vinyl
Carpet and sheet vinyl are typically sold by the linear metre at a standard width (3.6 m or 4.0 m roll width in Australia). Your flooring supplier will calculate cuts from the roll — but knowing your room area in m² helps you get accurate quotes and compare prices per m².
Floor and tile calculator — frequently asked questions
How do I calculate how many floor tiles I need?
Divide the total floor area (in m²) by the area of one tile (length × width in metres). For a 600 × 600 mm tile, each tile covers 0.36 m². A 20 m² room needs about 56 tiles before waste. Always add 10% for cuts and breakages — 15% for diagonal layouts or irregular rooms.
What are standard floor tile sizes in Australia?
Common sizes are 300 × 300 mm, 400 × 400 mm, 600 × 600 mm, 600 × 300 mm and 800 × 800 mm. Large format tiles (600 × 1200 mm and above) are increasingly popular for contemporary Australian homes. The calculator covers all sizes — just enter your tile dimensions manually if yours aren't in the dropdown.
How many tiles come in a box in Australia?
It depends entirely on tile size. A box of 600 × 600 mm tiles typically contains 3–4 tiles covering about 1.3–1.5 m². Smaller 300 × 300 mm tiles often come 16–20 per box. The calculator converts your tile count to boxes based on the coverage per box your supplier quotes.
What adhesive do I need for floor tiles in Australia?
For most residential floor tiles, a grey cement-based tile adhesive (flexible, Class 2 to AS 4992.1) is standard. Larger format tiles (600 × 600 mm and above) need a polymer-modified adhesive to handle the extra weight and movement. In wet areas, use a waterproof adhesive rated for wet area use.
How much does floor tiling cost in Australia?
Floor tiles themselves start around $25–$60 per m² for standard ceramic or porcelain. Premium natural stone ranges from $100–$300+ per m². Professional tiling labour adds $50–$100 per m² depending on tile size, layout complexity and your location in Australia.