My joiner said I needed 3 square metres of tiles to finish off my kitchen. Went to store and the ones I like are 300 mm x 308 mm. How many would I need - useless at maths and staff weren't much help either.
Roughly 100.
Does it matter which way the tiles need to go? Allow for spacing.
Draw it out on squared paper. You'll see how well it fits, what cutting may be needed and how many to get. Allow for some breakage