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A large sofa: 10 to 14 yards of 60-inch-wide fabric or 16 to 20 yards of 45-inch-wide fabric. A small sofa: 6 to 8 yards of 60-inch-wide fabric or 10 to 12 yards of 45-inch-wide fabric. A small table: 5 to 6 yards of 60-inch-wide fabric or 6 to 8 yards of 45-inch-wide fabric. A standard-size armchair: 4 to 6 yards of 60-inch-wide fabric or 8 to 10 yards of 45-inch-wide fabric.
Divide the calculated fabric width by the width of the fabric you have chosen to determine the number of widths required. Fabrics are usually available in widths from 40 to 60 inches.If your fabric measures 55 inches wide, in the example, divide 189 inches by 55 inches. The result is 3.4 or rounded up to 4 widths.he total amount of fabric required is 376 inches. Divide this by 36 inches to determine the total yardage. Add the length of the pattern repeat to the cutting length if you are using a print fabric and you want to match the pattern at the seams. This length is usually indicated on the roll at the fabric store.