How many paving slabs 400mmx400mm in 1 square meter?

To calculate how many 400mm x 400mm paving slabs fit in one square meter, first convert the dimensions of the slab to meters: 0.4m x 0.4m. The area of one slab is 0.16 square meters (0.4m x 0.4m). Therefore, to find how many slabs fit in one square meter, divide 1 square meter by the area of one slab: 1 / 0.16 = 6.25. Since you can’t have a fraction of a slab, you can fit 6 slabs in one square meter, with some leftover space.