Ruffles will require up to another 1/2 yard of fabric. Upholstery Chair Seats. 3/4 yard of 54 wide fabric is enough to re-cover 2 standard chair seats. Three yards of fabric will be enough for eight chair seats. If the repeat is large or a pattern has to be centered, you may need more. Chairs A wing chair will require 5-7 yards, a traditional chair with upholstered seat and back 3 yards and a club chair 5-6 yards.