Tile Calculator
Plan room quantities, wastage and the cost of full tile boxes.
In your browserYour floor areas
Tile and ordering: 600 × 600 mm · Tiles per box: 4 · Waste allowance (%): 10%
Optional purchase budget
Use your own final quoted prices, including any applicable taxes. No market price is supplied. Up to 2 decimal places; maximum LKR 1 billion per price.
Compare the same tile and finish only. The estimate excludes anything you have not included in your quotes, such as adhesive, grout or labour.
Your order at a glance
10Full boxes to buy
40Tiles in full boxes
Net floor area: 12 m² · Extra tiles from box rounding: 3Full quantity breakdown
- Net floor area
- 12 m²
- One tile area
- 0.36 m²
- Area including waste
- 13.2 m²
- Tiles before waste
- 34
- Tiles including waste
- 37
- Full boxes to buy
- 10
- Tiles in full boxes
- 40
- Extra tiles from box rounding
- 3
- Ordered tile coverage
- 14.4 m²
Net area by room
- Floor area 1
- 12 m²
Before you order
Why does the purchase cost use full boxes?
An area estimate can require a partial tile or box. Suppliers often sell whole boxes, so the budget multiplies the rounded-up box count by your quoted box price, then adds your entered charges.
Can two box prices be compared directly?
Only if they contain the same tile and finish. A cheaper box may contain fewer tiles. Compare the full quantity and total cost for this project, including charges, rather than the sticker price alone.
Area figures show up to 6 decimal places. Whole tile and box counts use exact decimal fractions before rounding up.
Assumptions and method
For each rectangle, subtract the entered untiled area, then add all net areas. Divide the total area plus waste by one tile’s face area and round up to whole tiles. Divide by tiles per box and round up again.
This is an area-based purchase estimate. It pools tiles across rooms and does not plan rows, grout joints, patterns, cuts or reusable offcuts. Grout joints are ignored, which can increase the area-based tile count. Diagonal layouts, narrow strips and fragile tiles may need more waste. Check a layout and your supplier’s stated box coverage before ordering.
Calculation stays in this browser.