Construction/Home calculator

Tile Calculator Material Estimator

Estimate how many tiles are needed from floor area, tile size, and waste allowance.

FormulaTiles needed = floor area x (1 + waste %) / tile area

Formula

Tile quantity formula

Tile estimates should account for cuts, breakage, layout pattern, and spare replacement tiles.

Tiles needed = floor area x (1 + waste %) / tile area

For 20 sq m with 0.36 sq m tiles and 10% waste, buy about 62 tiles.

FAQ6 common questions for this calculator.

FAQs

What waste percentage should I use?+

Many projects use 5-15%, depending on layout complexity and tile size.

Does this include grout?+

No. It estimates tile count only.

How does the Tile Calculator calculate the result?+

For the Tile Calculator, it uses the Tile quantity formula: Tiles needed = floor area x (1 + waste %) / tile area. For 20 sq m with 0.36 sq m tiles and 10% waste, buy about 62 tiles.

What information do I need to use the Tile Calculator?+

For the Tile Calculator, enter floor area, tile size, and waste allowance. Keep the units consistent with the calculator fields and compare your setup with the worked example on the page.

How accurate is the Tile Calculator?+

Tile Calculator is a material estimate based on the dimensions, unit system, and allowance values entered. It uses the Tile quantity formula, but cuts, openings, site conditions, pack sizes, and code requirements can change the final quantity.

What should I check before using the Tile Calculator result?+

For the Tile Calculator, check floor area, tile size, and waste allowance, unit system, waste allowance, openings, site conditions, and supplier pack size. Use the estimate as a planning quantity before ordering materials.

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Construction/Home guide

How to use the Tile Calculator

Estimate how many tiles are needed from floor area, tile size, and waste allowance. The page also explains the tile quantity formula and shows a practical example: For 20 sq m with 0.36 sq m tiles and 10% waste, buy about 62 tiles.

  1. 1

    Enter your details

    Enter floor area, tile size, and waste allowance, then complete any other fields shown in the calculator.

  2. 2

    Check the calculation

    Review the result alongside the tile quantity formula: Tiles needed = floor area x (1 + waste %) / tile area.

  3. 3

    Compare scenarios

    Change one or more inputs to see how they affect the tile Calculator result before you use the estimate.