Tile Quantity
Estimate the total number of tiles based on the net floor or wall area, tile size and selected wastage percentage.
Calculate the number of tiles, boxes and estimated material costs for your floor or wall tiling project.
For wall tiles, enter the total tiled wall length and height. Deduct doors/windows using their combined area in square feet. For floors, leave openings at zero unless needed.
Excludes adhesive, grout, skirting, levelling, transport and other additional expenses.
Note: Results are estimates based on the measurements entered. Actual tile needs depend on room shape, tile layout, cuts, pattern and installer practices. Confirm box coverage with your supplier before ordering.
Planning to install new floor tiles or wall tiles? Our Tile Quantity Calculator helps you estimate how many tiles you need for your room, bathroom, kitchen, living area or other tiling project. Enter your surface dimensions and tile measurements to calculate the estimated tile quantity, number of boxes and material costs.
This free online tile calculator also lets you add a wastage allowance, account for door and window openings, and estimate installation labour using your own prices. It is useful for homeowners, contractors, interior designers and anyone preparing a preliminary tiling budget.
Use the calculator above to prepare an initial material estimate before buying tiles. Enter accurate measurements and check the packaging details provided by your tile supplier.
Estimate the total number of tiles based on the net floor or wall area, tile size and selected wastage percentage.
Calculate how many complete boxes to purchase using the number of tiles supplied in each box.
Enter the price per tile and installation rate to estimate the basic material and labour cost.
Add an allowance for cutting, breakage and fitting adjustments according to your tile layout and installer guidance.
Use the calculator for floor surfaces or wall surfaces by entering the dimensions of the area you intend to cover.
Enter room dimensions in feet, inches, metres or centimetres, and tile dimensions in the available measurement units.
Follow these steps to estimate tile requirements for your flooring or wall installation project.
Choose floor tiles or wall tiles to identify the type of project you are estimating.
Measure the length and width of a floor, or the total tiled length and height of a wall. Select the correct unit.
Enter the actual tile length and width. Check whether the package lists dimensions in millimetres, centimetres or inches.
For wall tiling, enter the combined area of doors and windows in square feet if those areas will not be tiled.
Select a wastage allowance and enter the number of tiles supplied per box as printed on the packaging.
Enter tile and installation prices, review the estimate and print the results for your project records.
A tile quantity calculator estimates the number of individual tiles required to cover a measured surface. The result depends on the net surface area, the area covered by each tile and the wastage allowance.
For a rectangular floor, multiply the room length by its width after converting both measurements into the same unit. For wall tiling, multiply the tiled wall length by its height. Deduct any openings that will not be covered by tiles.
Surface area: Length × Width. For a wall, use the total tiled wall length × height. Make sure all dimensions use consistent units before calculating the area.
Multiply the tile length by its width after converting the dimensions into a common unit. For example, a tile measuring 600 mm × 600 mm covers a nominal face area of 0.36 square metres.
Divide the net surface area by the area of one tile. Round the result up to a whole tile because partial tiles cannot be purchased as complete units in a normal box calculation.
Add an appropriate allowance for cuts and breakage. Straight layouts may require less cutting than diagonal, herringbone or other complex patterns. The required allowance depends on room shape, tile format and installation conditions.
Divide the required tile quantity by the number of tiles in each box, then round up to the next complete box. The packaging information from your supplier should take priority over a generic estimate.
Consider a rectangular room measuring 12 feet by 10 feet, using 600 mm × 600 mm tiles and a 5% wastage allowance. The example below illustrates the basic area-based calculation.
| Calculation | Example value |
|---|---|
| Room area | 120 sq ft |
| Tile dimensions | 600 × 600 mm |
| Nominal area per tile | Approximately 0.36 m² |
| Base tile quantity | Approximately 31 tiles |
| Quantity with 5% allowance | Approximately 32 tiles |
This example is an area-based estimate. The final order should also account for the box quantity, actual product coverage, cuts, layout, and any additional pieces required for future repairs.
Tile wastage is the extra quantity ordered above the basic calculated requirement. Tiles may need to be cut around corners, walls, doorways, pipes and other obstacles. Some tiles can also be damaged during handling or installation.
| Layout or situation | Planning consideration |
|---|---|
| Simple rectangular layout | A modest allowance may be sufficient. |
| Rooms with many corners | Additional cuts can increase wastage. |
| Diagonal or patterned layouts | More cutting and matching may be required. |
| Large-format or special tiles | Follow installer guidance and product requirements. |
Buying tip: If possible, purchase tiles from the same batch or shade lot and keep a few spare tiles for future repairs. Colour and finish can vary between manufacturing batches.
Estimating your tile requirements before visiting a supplier can help you prepare a more organised project budget. It also makes it easier to compare product prices and avoid ordering too few tiles.
Calculate the net surface area, divide it by the face area of one tile, and add a suitable allowance for cuts and breakage. Round the quantity up and then calculate the number of complete boxes using the supplier's packaging information.
A 600 × 600 mm tile has a nominal area of 0.36 square metres, or approximately 3.875 square feet. For 100 square feet, the basic estimate is about 26 tiles before adding wastage. Box quantities and cutting requirements can increase the order.
The number varies with tile dimensions, thickness, manufacturer and packaging. Check the label on the box for the number of tiles and the total square-metre or square-foot coverage.
Yes. An allowance can help cover cutting, breakage and fitting adjustments. The right percentage depends on the layout, room shape, tile type and installer recommendations.
Yes. Enter the total length and height of the wall areas that will receive tiles. Deduct the combined area of doors and windows that will remain untiled.
No. The estimate focuses on tiles, the selected tile price and the entered installation rate. Adhesive, grout, levelling compounds, spacers, skirting and transport may need separate estimates based on the product and installation method.
No. It is a preliminary estimate based on the dimensions entered. Actual requirements can vary because of layout, joint spacing, cuts, room irregularities, tile defects and packaging. Confirm the final order with your installer or supplier.
Keeping spare tiles can be useful for future repairs, especially when the same design or shade may not remain available. Store them safely and record the product name, size, colour and batch details.