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Tile-size equivalence

How many tiles are needed after changing tile size?

Calculate the original covered area and divide it by the area of the new tile, with an optional allowance.

Actual source format

Actual target format

Dimension used in the calculation

Calculation uses the actual or declared batch dimension.

Source area3.6 m²
Target area3.96 m²
Tiles in the new format22

Calculation uses the actual or declared batch dimension. The conversion is based on area, not on a tile-by-tile layout.

01

Formula used

target tiles = ⌈(source tiles × source tile area × (1 + allowance/100)) ÷ target tile area⌉

02

Worked example

Ten 60 × 60 cm tiles cover 3.60 m². Changing to 30 × 60 cm with a 10% allowance requires 22 tiles.

03

Common mistakes

  • Comparing only one side of the two tile sizes.
  • Forgetting that the number of joints changes.
  • Treating an area equivalence as an exact tile layout.

04

Related tools

Check the layoutConvert the result to boxes