Tile calculator
Work out how many tiles you need for a floor or wall. Enter the area and the tile size and this calculator gives you the number of tiles, the square metres to buy, and the adhesive and grout.
Tile calculator
Enter your measurements in metres. Everything updates as you type, and nothing is sent anywhere.
Figures include 10% for cuts and breakages, more for a patterned or diagonal layout. Adhesive is estimated at about 5kg per square metre using a 6mm notched trowel, and grout at about 2kg per square metre, both of which rise with larger tiles and wider joints. Buy tiles by the box and keep a few spares from the same batch.
Common questions
How many tiles do I need?
Work out the area to tile, then divide by the size of one tile. A 300mm by 300mm tile covers 0.09 square metres, so about 11 of them per square metre. The calculator does it for you and adds 10% for cuts and the odd breakage.
How much tile adhesive and grout do I need?
As a guide, about 5kg of adhesive per square metre with a 6mm notched trowel, and around 2kg of grout per square metre. Both go up with larger or thicker tiles and wider grout joints, so treat these as a starting point and round up.
These quantities are a guide to help you order. Always round up and check with your supplier before buying.