KuraStone™ Estimation Worksheet Estimate Lineal Footage, Outside Corner Enter the total lineal footage of outside corner pieces needed. Linear ft Convert to inches Multiply by 12 to convert to inches. Divide by 6 to convert inches to pieces. Pieces are each 6" tall. inches to Pieces This Is the total number of pieces needed. Estimate the total number of packs. Pieces come 4 to a pack. Divide the number calculated above by 4 and round it up to the Convert to Packs nearest whole number.