This calculator allows you to determine the 
                number of square feet in one or more rooms and then determine 
                how much sheet vinyl material is required. 
                Sheet vinyl, like carpeting, is normally sold by the square 
                  yard. The calculator will automatically convert your square 
                  foot measurements into square yards. 
                 Tips on Measuring for Sheet Vinyl
                  To determine a floor's square footage, multiply length times 
                  width. When measuring, round off inches to the nearest foot. 
                  For irregularly shaped floors, divide them into individual sections, 
                  calculate the square feet in each one, and then add them together.