Calculate No. of Tiles in Square Meter?

Lillibet_2

Please can anyone tell me how to calculate the number of tiles in a square meter? My tiler, who is now on holiday, has told me I need to get 11 square meters & the tiles I want at 15 cm by 15 cm but no-one in Topps Tiles knew how to calculte how many I need?!

Thansk in advance to anyone more mathimatically savy than I am!

Howells

First work out how big a tile is in square metres (use 0.15m not 15cm)
0.15*0.15 = 0.0225 m2

Then find out how many of these there in 1 square metre.
1/0.0225 = 44.444 tiles - OK roughly 44 and a half tiles per square metre.

Finally times that by the number of square metres you need.
44.5*11 = 489.5 tiles

I would round that up to at least 500 in case of breakages when cutting.

Enjoy your tiling;)

Lillibet_2

Thank you Howells, much appreciated.