- 1). Find the number of square feet of marble tile you need. Measure the floor, countertop or other area where you plan to install marble tile. Multiply the length by the width. For example, a ten-by-fifteen-foot floor area contains one hundred fifty square feet.
- 2). Determine the thickness of the tiles you will use. The majority of marble tile comes in thicknesses of one-eighth to three-eights of an inch. Choose thin tile for a lighter, cheaper option. For areas that must withstand heavy, spring for thicker tiles.
- 3). Calculate the weight of one square foot of the tile you plan to use. Marble tile weighs 13.34 pounds per square foot for each inch of thickness; multiply the thickness in inches by 13.34 to find the weight of a single square foot of tile. To determine the weight of quarter-inch-thick marble tile, multiply 0.25 inches by 13.34, or 3.34 lbs. per square foot.
- 4). Multiply the number of square feet of tile you need by the weight of one square foot of tile (from Step 3) to determine the total weight of marble tile you need. Using the quarter-inch tile example from Step 3, and assuming a 150-square-foot floor, multiply 3.34 lbs. by 150, or a total weight of marble tile of 501 lbs.
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