For ensuite 2 have rounded up to the nearest tile. As the poster before states that you may require additional tiles to get the right fit. I calculated about 60…

Fair enough. It does depend on pattern etc but if it was a uniform cut then I think the calcs are reasonably close. The OP did say he/she was going…

E1 - bath floor = 4.64 sqm = 12.9 tiles
- showerfllor = 1.98 sqm = 5.5 tiles
E1.1 shower wall = 2.31 sqm = 6.4 tiles
…