Before purchasing flooring material, it is important not only to choose the right design and format but also to understand how to calculate the quantity of porcelain stoneware correctly. Mistakes at this stage can result in material shortages during installation or unnecessary expenses due to overbuying.
To avoid such issues, you should determine in advance how much porcelain stoneware is needed for the floor, taking into account the room size, tile format, and installation method.
The first step is to calculate the total area. For a rectangular room, multiply length by width. For example, a 5 × 4 m room has an area of 20 m².
If the space has a complex shape with niches or projections, divide it into simple rectangles, calculate each area separately, and then add them together.
Every calculation of porcelain stoneware per square meter starts with this measurement.
Once you know the total area, the next step is understanding how to calculate porcelain stoneware for the floor based on tile dimensions. For example, if you choose a 600 × 600 mm tile (0.6 × 0.6 m), the area of one tile is 0.36 m².
To determine how much porcelain stoneware to buy, divide the room area by the area of one tile:
20 ÷ 0.36 = 55.5
Round up to the next whole number — in this case, 56 tiles.
However, this is not the final figure.
A reserve is always necessary. It compensates for:
For standard straight installation, it is recommended to add 5–7%. For diagonal or complex layouts, increase the reserve to 10–15%.
So if 56 tiles are required, adding a 10% margin means purchasing approximately 62 tiles.
This is how you correctly determine how much porcelain stoneware is needed for the floor without the risk of shortages.
If you are using reinforced materials such as 20 mm tiles, the calculation principle remains the same. However, you should consider installation specifics and potential additional cutting.
You can learn more about this format in the article Where 20 mm Porcelain Stoneware Is Used.
When installing outdoors or on adjustable pedestals, increasing the reserve slightly is recommended, especially if the base has a complex layout.
For rooms with unusual geometry, it is best to create a layout plan in advance. This helps identify cutting zones and calculate the required material more accurately.
A professional approach includes:
This method provides a clearer understanding of how much porcelain stoneware to purchase and helps avoid overspending.
When calculating independently, common mistakes include:
To achieve an accurate result, it is important to consider both surface area and technical installation factors.
Understanding how to calculate the quantity of porcelain stoneware allows you to plan your budget efficiently and avoid delays during renovation. Accurate calculations reduce waste and help optimize costs.
On itum.ua you can find a wide assortment of porcelain stoneware in various sizes and thicknesses. If needed, our specialists will help calculate the required quantity and select the optimal solution for your specific project.