Tile Calculator Tile Calculator Estimate the number of tiles needed for a floor or wall area. Area Dimensions Units: Feet Inches Area Length: Area Width: Tile Dimensions Units: Inches Feet Tile Length: Tile Width: Layout & Waste Grout Line Width (inches): 0" (No Grout) 1/16" 1/8" 3/16" 1/4" 3/8" 1/2" Custom (inches) Waste Overage (%): Typically 10-15% for cuts, breakage, and mistakes. Increase for complex layouts or diagonals (15-20%). Calculate Tiles Needed