How to Figure Out How Many Tiles Are Needed to Tile a Floor


Tiling a floor is a project often tackled by handy homeowners who hope to save money on installation costs. That being said, many find themselves bewildered when it comes to compiling a material list: they can't figure out how many tiles are needed to tile the floor. Accurately estimating the number of tiles required for the job will allow you to purchase all needed tile at the same time, which will guarantee that the tiles are from the same dye lot as shipped from the factory.

Things You'll Need

  • Measuring tape
  • Calculator
  • Measure the floor where the tile is to be installed and multiply the length times the width of the room; this number is the square footage of the installation area.

  • Determine the square footage per tile by multiplying the length and width in inches of the tile you've chosen for the floor.

  • Divide the square inches per tile into 144 to arrive at the square foot area per tile. This is the number of square inches per square foot; a tile that is 12 inches square will be 12 times 12 equals 144, or one square foot. A tile that is 4 inches by 6 inches will be 24 square inches; 24 goes into 144 six times, so this size tile will be six tiles per square foot of installed flooring.

  • Multiply the square foot per tile by the square footage of the installation area.

  • Add 10 percent to the total number of tiles. This amount is included to account for material waste during the tile cutting process.

Tips & Warnings

  • It's a good idea to purchase a few extra tiles in case you need to make repairs in the future.

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