To calculate the number of 40×40 tiles in 1 square meter, you need to calculate the area of one tile in square meters and then divide the total area by the area of one tile. Typically, there would be approximately 6.25 (or rounded to 7) 40cm x 40cm tiles can fit in 1 square meter.

A 40×40 tile measures 40cm long by 40cm wide which is equivalent to 400mm x 400mm or 0.4m x 0.4m in dimension. To calculate area of one tile, you can multiply length and width, such as area = 0.4m × 0.4m = 0.16m2. So, there would be 0.16 square meters area in one 40cm x 40cm tile.

The quantity of 40×40 tiles in a square meter (m2) equals 7 tiles. Assuming dimensions of the tile width and height are in millimeters measurements, which equates to 7 400mm x 400mm tiles in 1 square meter.

**To calculate how many 40×40 tiles in 1 square meter- use this calculation steps:**

- Convert dimension of tile in meters: Like, a 40×40 tile measures 0.4×0.4 in meters
- Estimate area of one tile in square meter: To calculate area multiply the length and width of one tile, like area = 0.4m x 0.4m = 0.16m2
- Estimate number of tiles needed per m2: Divide 1m2 area by the area of 1 tile, this give you the number of 40cm x 40cm tiles in a m2, such as number of tiles = 1/0.16 = 6.25 tiles needed.
- It is only possible to buy whole tiles, therefore you need to round up 6.25 tiles to 7 40×40 tiles.

**Conclusions**:-

To calculate how many 40×40 tiles in 1 square meter, divide 1m2 area by the area of 1 tile, this give you the number of tiles per m2. Normally, there would be approximately 6.25 (or rounded to 7) 40×40 tiles can fit in 1 square meter.